diff --git a/src/jimgw/single_event/transforms.py b/src/jimgw/single_event/transforms.py
index e3e4795d..200348fe 100644
--- a/src/jimgw/single_event/transforms.py
+++ b/src/jimgw/single_event/transforms.py
@@ -112,10 +112,6 @@ def named_inverse_transform(x):
 
         self.inverse_transform_func = named_inverse_transform
 
-def named_m1_m2_to_Mc_q(x):
-    Mc, q = m1_m2_to_Mc_q(x["m_1"], x["m_2"])
-    return {"M_c": Mc, "q": q}
-
 
 @jaxtyped(typechecker=typechecker)
 class GeocentricArrivalTimeToDetectorArrivalTimeTransform(
@@ -383,28 +379,56 @@ def named_inverse_transform(x):
             }
 
         self.inverse_transform_func = named_inverse_transform
- 
 
-ComponentMassesToChirpMassMassRatioTransform = BijectiveTransform((["m_1", "m_2"], ["M_c", "q"]))
+
+def named_m1_m2_to_Mc_q(x):
+    Mc, q = m1_m2_to_Mc_q(x["m_1"], x["m_2"])
+    return {"M_c": Mc, "q": q}
+
+
+def named_Mc_q_to_m1_m2(x):
+    m1, m2 = Mc_q_to_m1_m2(x["M_c"], x["q"])
+    return {"m_1": m1, "m_2": m2}
+
+
+ComponentMassesToChirpMassMassRatioTransform = BijectiveTransform(
+    (["m_1", "m_2"], ["M_c", "q"])
+)
 ComponentMassesToChirpMassMassRatioTransform.transform_func = named_m1_m2_to_Mc_q
-ComponentMassesToChirpMassMassRatioTransform.inverse_transform_func = named_Mc_q_to_m1_m2
+ComponentMassesToChirpMassMassRatioTransform.inverse_transform_func = (
+    named_Mc_q_to_m1_m2
+)
+
 
 def named_m1_m2_to_Mc_eta(x):
     Mc, eta = m1_m2_to_Mc_eta(x["m_1"], x["m_2"])
     return {"M_c": Mc, "eta": eta}
 
+
 def named_Mc_eta_to_m1_m2(x):
     m1, m2 = Mc_eta_to_m1_m2(x["M_c"], x["eta"])
     return {"m_1": m1, "m_2": m2}
 
-ComponentMassesToChirpMassSymmetricMassRatioTransform = BijectiveTransform((["m_1", "m_2"], ["M_c", "eta"]))
-ComponentMassesToChirpMassSymmetricMassRatioTransform.transform_func = named_m1_m2_to_Mc_eta
-ComponentMassesToChirpMassSymmetricMassRatioTransform.inverse_transform_func = named_Mc_eta_to_m1_m2
+
+ComponentMassesToChirpMassSymmetricMassRatioTransform = BijectiveTransform(
+    (["m_1", "m_2"], ["M_c", "eta"])
+)
+ComponentMassesToChirpMassSymmetricMassRatioTransform.transform_func = (
+    named_m1_m2_to_Mc_eta
+)
+ComponentMassesToChirpMassSymmetricMassRatioTransform.inverse_transform_func = (
+    named_Mc_eta_to_m1_m2
+)
+
 
 def named_q_to_eta(x):
     return {"eta": q_to_eta(x["q"])}
+
+
 def named_eta_to_q(x):
     return {"q": eta_to_q(x["eta"])}
+
+
 MassRatioToSymmetricMassRatioTransform = BijectiveTransform((["q"], ["eta"]))
 MassRatioToSymmetricMassRatioTransform.transform_func = named_q_to_eta
 MassRatioToSymmetricMassRatioTransform.inverse_transform_func = named_eta_to_q