We've checked for air leaks... set the timing properly via timing light and all those goodies.
The long and short of it is that we can't go WOT on it or the engine falls flat on it's face. It almost feels like it quick lean bogs out, and no four stroking.
This is a treats 64cc party pack burrito supreme with the treats cdi, and the crazy pietcard box/ht coil.
All timing is completely ruled out. We're on to the idea that it could possibly be a case leak... not 100% sure. My natural assumption is to think that this is an air problem.
If you feather the throttle, it will eventually get close to peak RPMS. Riding, if you gradually take it to about 1/3 throttle, it will eventually rev up and get to about 40-45 (estimated not gpsed, so probably more like 17-18 mph).
We don't have any more hair so we're ripping each other's teeth out with needle noses.