Finally fixed the problem! Started changing items related to the fuel level since it seemed that all of the problems were connected with an inconsistent level of fuel in the bowl. Changed the main needle and seat, next the aux. needle and seat, then the float itself, than the float pin and nothing seemed to change. The main body to top gasket became torn due to removing it too many times, so replaced it with a used gasket, the one that was on the carb for the last umpteen years, and the whole mess straightened up and all was well. The new gasket, furnished with the kit, was just a little tiny bit too wide and the inner center of the float wold catch on the gasket - sometimes! Just about drove me nuts, as you can imagine. The fix was an accident, but fixed none the less. Learn from my mistake, and never take for granted that a new part will be what is needed to fix something! Sometimes that old used part in the trash can will save us.