mfuess

PART TWO:

I know it "sounds" like a carb problem to you, but I don't necessarily agree. Did you pop-off test it? Did you flow test it? Did you check the pump pressure? Not likely.

You said you changed the ignition, but from what I read only partially. The original sensor, switch, and battery pack remained. The symptoms I read here "suggest" it's in the ignition, right when the spark advance controller kicks in... This is a guess at best, but at least I have the equipment to actually test this stuff and isolate the real problem.

As your engine begins to fire up, the current load increases directly propottional to RPM especially during the timing swing. I would suspect a battery and or switch and or sensor. Sometimes over-voltage can cause a malfunction as well as an under voltage. Some ignitions are sensitive to battery supply voltage and current availibility.

But again, only proper analysis will find and correct the problem.