Are you running an AFR sensor?
Ok, the topham style tm34 carbs need a small pilot jet. They come with a 20, I dropped to a 17.5 and it's still rich, so I'm going to try going up on the pilot airjet(don't want to pull the floatbowls again). The needle jet is a little lean so I have a 1 size up coming. Main jet seems good in the mid 12s @70*. Jet needle also seems fine.
In other news I finally fixed my slight oil leak. It was the pushrod seal leaking due to a worn bushing. Didn't want to order a bushing so I made my own with some bearing bronze I had. Now no more drip after running at higher RPM.