after carb clean balance all cyclinders are hot now for the rest of the bike

[His Dudeness]

Electrical faults can create flat spots with throttle position. As the mixture resistance changes you can find opening the throttle with a weak spark will make it misfire, back off on the throttle and the engine picks up.

Yea I've experienced that where a cylinder was dropping out because of water around the spark plug caps causing arcing to happen but only at low revs. Then as you're saying the mixture resistance must have lowered as you opened the throttle because the arcing stopped as the revs went up and the bike ran normally.