Possible to give lower absolute weight to a given match?

[paragon0000]

I was wondering if it was possible to give a lower absolute weight to a given match. For example, if a match is typically played to 10 points but the match was only played to 6 but and was still deemed "complete," how would I implement this with TrueSkill? I saw the section on partial play but it looks like this is for when one player joins or leaves a match and doesn't play the whole duration. If I put 0.6 for all the weights parameters, the rating changes as if it was a 10 point match. Thanks!