Hey guys, I have a brison 3.2 in a zero I am flying. This engine is great and really hauls the mail. My question is that when I tune it on the ground, it has an awesome transition from idle to WOT. When I am flying at anything less than 3/4 throttle, it seems to burble or sputter. Transition is still good while in the air and i can blip the engine from idle to higher settings to control decent on landings for example. This effect does not seem effect the running of the engine and when throttling back up it readily responds. I just dont want to get into a dead stick situation while flying.

Any help would be appreciated.