I took everything apart and cleaned my carbs...put it all back together and the floats were leaking on 1 and 2...bent the float tab up just a little and fixed the overflowing carbs...now #2 and #3 takes forever to heat up on the exhaust pipes. I took the sparkplug out and check spark on #2 and #3 and it looks like strong spark against the engine block. When I took it out for a spin around the block it bogs badly under a load (in gear) and in fact its a struggle to keep it running...nothing was changed but it seems starved...am I on the right track? Idle adjustment screws have not been moved...77 cb550k