is the filter over oiled?try a 38 slow jet.
The air filter has the lightest coating of oil i could do using K&N red aerosol air filter oil. I did run it without the air filter to see if it would lean it out, it did not.
The next step will be 38's after I try my new needle valve and seats from honda.
The little O-rings around the main jets, do they seal well? Any cracks in the towers?
BTW, no 500 or 550 needs a main jet over 100.
No cracks around the towers, some pitting. I think the o-rings seal well none the less. But im having rich problems at idle so the main jet should have minimal effect right ?
And I know the jets were way too big at 125, swapped in new 100's.
I thought I found some rust in the carbs even though my tank leaks very clean, so I did a 24hr metal rescue soak to be sure.
Finally I think these needles in the attached picture will show part of my problem, also I'm pretty sure they got mixed up when I originally stripped the carbs so that the worn seats did not match the worn needles causing it to overfill even with the floats at 22mm measured from the float just touching the needle without depressing the spring. (hence new ones being ordered)
Furthermore I plan on checking the new valve and seats with the clear tube method.