My tuned has about 3/4 of a gallon on it. The compression is very light. Wont even attempt to hold at 3 o'clock but it runs consistently as far as temps go and doesn't flame out. It does feel like Im chasing a tune b/c I can't quite get the lsn right. Sometimes it will rev while in the air (jump) and if I open the lsn a hair it wants to stall, so I open the idle gap and it will rev after idle. I kind of think I just need to get it pinched or buy a new p/s.