If we lean the LS needle it hangs even worse. It will idle all day, but off idle it is really rich. Had 3 different experienced guys try and tune it. I just don't know how much air passing through the front bearing is acceptable. My Cheapo .21 Dynamite in the RX8 responds to needle changes just fine. The HS needle (although really lean at 2.5 turns in, factory is 5) responds fine. Richening it up from 2.5 turns out, the car wont even clean out. It is just lean enough to clean out. If We run the LS at factory 2.5 turns it hangs idle really bad like an air leak.

I went through the motor today and cleaned, re-lubed everything and checked every o-ring and everything is sealed and looks great with the exception of the front bearing. I can blow smoke through the front bearing from the carb inlet. I read leaking after run oil is normal but how much air leaking is normal? This motor had about half a gallon now and still has good pinch but has come back once at 250 deg F. A bit warmer than I would like to see and its the hanging idle/lean problem that is causing this (I am new, sorry for the questions). Nobody else's car hangs the RPM's off of WOT like mine does.

It is just a stock Nova 353 steel bearing from Murnan if that makes any difference. Maybe I should have gone RB?

P.S long noob post, but want to give as much info as I can.

Thanks