Have you called Keith yet?? I bet he would have a solution to your carb situation.
I don't think it is fuel puddling because more people would have mentioned this. My 115 does not seem to suffer those symptoms in flight, at least at the speeds I fly knife edges at.

dbcaster, one more question. It does not relate to the dripping, but the run-ability of all engines. How much clearance do you have between the cowl and the bottom of the carb? Too little space can cause problems and so can air flow changes over the carb venturi opening, not only the diaphragm, but the venturi opening too, or at least I have seemed to notice this with certain installations.