My clutch is a two-shoe with Paz springs. I have done a little work with it but I would agree that it probably could use some more tuning. It also seems to have better low end when the engine is cold, which kinda points to the clutch too since I am running crappy ATF at the moment.
I guess the jetting just seems to point to an air leak, but I have searched high and low for one and have not found anything. I guess it has been pretty cold though and the kit may not be completely broken in yet...