Alright guys. Question...got a 4000 that I did some extremely mild port work to (key word extreme...it may not have even made any difference) . Just exhaust side cleanup and smooth out. Plus deleted base gasket. However I think it made some difference cause my L needle is wanting to be set at less than 1 turn now. Is that common? I've read somewhere that more air thru means more fuel through and that instead of leaning one out it will run rich due to the amount of fuel its pulling thru with it. Idk