Good point, I knew that changing carburators would have a significant effect on the engine somehow. But still, when I try different jets at WOT, it either dies or the RPM's go down below idle. I'm wondering if its something electrical, because when I WOT with no brake on/nothing stopping the wheel, it rev's right up. It's like the engine has to get past a certain point, no matter what the throttle. So nonetheless, my low end is still having issues. I have already cleaned everything on the strator plate very well, but THE only thing I haven't replaced yet is the condenser. Although it's a part of the ignition system and could be at fault, I don't know if that would cause this much of a problem. Whats unusual is that under any carb modification it seems, it always has that similar problem. I might try and take out that condenser and see if it's having issues or not.