Originally Posted by 1QwkSport2.5r

Always start the engine richer - when changing fuels, Richen the high side 1/4-1/2 turn and Richen the idle 1/8-1/4 turn so as to ensure the engine is starting out rich and readjust from there.

Wildcat uses a higher viscosity oil than Omega does, so that's probably a possible issue - also omega has a little less oil in it. Probably need to go a bit richer.