The draw stop can be used to fine tune draw length and/or letoff. I don't know just how much change this will make but try leaving the draw stop set to your desired draw length. Next move the module to the next highest number (1/2" longer). What you end up doin is stop the draw before it reaches the valley created by the draw module. It's kind of a cheap way of doing it, but that is the only option you have other than playing around with cable/string twisting to some extent.
Anyway, try it and see what you get. Please report your results so it can be of use to others.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver