diff --git a/cmd/run.go b/cmd/run.go
index 39f8f7a0..7b762fa1 100644
--- a/cmd/run.go
+++ b/cmd/run.go
@@ -30,12 +30,10 @@ var cmdRun = &cobra.Command{
 
 // run worker command
 var (
-	useStatusKV    bool
 	dryrun         bool
 	faultInjection bool
 	facilityCode   string
 	storeKind      string
-	replicas       int
 )
 
 var (
@@ -79,7 +77,7 @@ func runWorker(ctx context.Context) {
 		flasher.Logger.Fatal("--facility-code parameter required")
 	}
 
-	natsURL, natsCreds, connectTimeout, err := flasher.NatsParams()
+	natsCfg, err := flasher.NatsParams()
 	if err != nil {
 		flasher.Logger.Fatal(err)
 	}
@@ -88,13 +86,13 @@ func runWorker(ctx context.Context) {
 		model.AppName,
 		facilityCode,
 		"firmwareInstall",
-		natsURL,
-		natsCreds,
+		natsCfg.NatsURL,
+		natsCfg.CredsFile,
 		"firmwareInstall",
-		controller.WithConcurrency(10),
-		controller.WithKVReplicas(1),
+		controller.WithConcurrency(flasher.Config.Concurrency),
+		controller.WithKVReplicas(natsCfg.KVReplicas),
 		controller.WithLogger(flasher.Logger),
-		controller.WithConnectionTimeout(connectTimeout),
+		controller.WithConnectionTimeout(natsCfg.ConnectTimeout),
 	)
 
 	if err := nc.Connect(ctx); err != nil {
@@ -126,9 +124,7 @@ func initStore(ctx context.Context, config *app.Configuration, logger *logrus.Lo
 func init() {
 	cmdRun.PersistentFlags().StringVar(&storeKind, "store", "", "Inventory store to lookup devices for update - 'serverservice' or an inventory file with a .yml/.yaml extenstion")
 	cmdRun.PersistentFlags().BoolVarP(&dryrun, "dry-run", "", false, "In dryrun mode, the worker actions the task without installing firmware")
-	cmdRun.PersistentFlags().BoolVarP(&useStatusKV, "use-kv", "", false, "When this is true, flasher writes status to a NATS KV store instead of sending reply messages (requires --facility-code)")
 	cmdRun.PersistentFlags().BoolVarP(&faultInjection, "fault-injection", "", false, "Tasks can include a Fault attribute to allow fault injection for development purposes")
-	cmdRun.PersistentFlags().IntVarP(&replicas, "replica-count", "r", 3, "The number of replicas to use for NATS data")
 	cmdRun.PersistentFlags().StringVar(&facilityCode, "facility-code", "", "The facility code this flasher instance is associated with")
 
 	if err := cmdRun.MarkPersistentFlagRequired("store"); err != nil {
diff --git a/go.mod b/go.mod
index 86e2d909..c3c33bc7 100644
--- a/go.mod
+++ b/go.mod
@@ -18,7 +18,7 @@ require (
 	github.com/jinzhu/copier v0.4.0
 	github.com/jpillora/backoff v1.0.0
 	github.com/metal-toolbox/fleetdb v0.17.1
-	github.com/metal-toolbox/rivets v1.0.2
+	github.com/metal-toolbox/rivets v1.0.3-0.20240404085830-34516b35bd8e
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.19.0
diff --git a/go.sum b/go.sum
index a0e495b8..5d5a6e80 100644
--- a/go.sum
+++ b/go.sum
@@ -570,6 +570,8 @@ github.com/metal-toolbox/fleetdb v0.17.1 h1:eyaCg4yGQnbXIjiBMZPsLqmEpxbltlEUNDG+
 github.com/metal-toolbox/fleetdb v0.17.1/go.mod h1:TbRbU+ppHIknqiAONR7JDQfzKij30uiPkehgxlA1Hv0=
 github.com/metal-toolbox/rivets v1.0.2 h1:cdLXPcGZOw0v8BP2driAMvBTf+PF9Eua2UnUpBFyDrs=
 github.com/metal-toolbox/rivets v1.0.2/go.mod h1:EMQJRT1mjIyFRXxvKNaBlz7Z4Sp88rTaGO8W18olN2I=
+github.com/metal-toolbox/rivets v1.0.3-0.20240404085830-34516b35bd8e h1:EFarcZokTOhcvGvd0VQkpgvEHtlsbAy/nKSMTnbnA4Q=
+github.com/metal-toolbox/rivets v1.0.3-0.20240404085830-34516b35bd8e/go.mod h1:EMQJRT1mjIyFRXxvKNaBlz7Z4Sp88rTaGO8W18olN2I=
 github.com/microsoft/go-mssqldb v0.17.0/go.mod h1:OkoNGhGEs8EZqchVTtochlXruEhEOaO4S0d2sB5aeGQ=
 github.com/miekg/dns v1.1.26/go.mod h1:bPDLeHnStXmXAq1m/Ch/hvfNHr14JKNPMBo3VZKjuso=
 github.com/miekg/dns v1.1.41/go.mod h1:p6aan82bvRIyn+zDIv9xYNUpwa73JcSh9BKwknJysuI=
diff --git a/internal/app/config.go b/internal/app/config.go
index cfdb3d14..e96f4188 100644
--- a/internal/app/config.go
+++ b/internal/app/config.go
@@ -109,6 +109,10 @@ func (a *App) LoadConfiguration(cfgFile string, storeKind model.StoreKind) error
 		}
 	}
 
+	if a.Config.Concurrency == 0 {
+		a.Config.Concurrency = WorkerConcurrency
+	}
+
 	return nil
 }
 
@@ -145,29 +149,39 @@ func (a *App) envBindVars() error {
 	return nil
 }
 
-func (a *App) NatsParams() (nurl, credsFile string, connectTimeout time.Duration, err error) {
-	if a.v.GetString("nats.url") != "" {
-		nurl = a.v.GetString("nats.url")
+type NatsConfig struct {
+	NatsURL        string
+	CredsFile      string
+	KVReplicas     int
+	ConnectTimeout time.Duration
+}
+
+func (a *App) NatsParams() (NatsConfig, error) {
+	cfg := NatsConfig{
+		ConnectTimeout: defaultNatsConnectTimeout,
 	}
 
-	if nurl == "" {
-		return "", "", 0, errors.New("missing parameter: nats.url")
+	if a.v.GetString("nats.url") != "" {
+		cfg.NatsURL = a.v.GetString("nats.url")
+	} else {
+		return NatsConfig{}, errors.New("missing parameter: nats.url")
 	}
 
 	if a.v.GetString("nats.creds.file") != "" {
-		credsFile = a.v.GetString("nats.creds.file")
+		cfg.CredsFile = a.v.GetString("nats.creds.file")
+	} else {
+		return NatsConfig{}, errors.New("missing parameter: nats.creds.file")
 	}
 
-	if credsFile == "" {
-		return "", "", 0, errors.New("missing parameter: nats.creds.file")
+	if a.v.GetDuration("nats.connect.timeout") != 0 {
+		cfg.ConnectTimeout = a.v.GetDuration("nats.connect.timeout")
 	}
 
-	connectTimeout = defaultNatsConnectTimeout
-	if a.v.GetDuration("nats.connect.timeout") != 0 {
-		connectTimeout = a.v.GetDuration("nats.connect.timeout")
+	if a.v.GetInt("nats.kv.replicas") != 0 {
+		cfg.KVReplicas = a.v.GetInt("nats.kv.replicas")
 	}
 
-	return nurl, credsFile, connectTimeout, nil
+	return cfg, nil
 }
 
 // Server service configuration options