[Vic Piano]

Hi Mike, Your description of the problem could be attributed to any and all of the things you mentioned however, I would check for any vacuum leaks and adequate fuel flow from the fuel pump to the carb. Also, check at idle, turn the air/fuel mixture screws one at a time to see if they produce any change in the engine idle. If they do not, that would most likely indicate a bad power valve. If everything with respect to fuel delivery is up to par and the carb adjustments do have an effect, I'd check the timing/distributor, etc. Without actually being there, it's tough to pin down the source(s) of the problem.