I run negative expo on my throttle and the transition is as close to flawless as you can get. IMHO You can take a look at it for yourself in the tuning video I posted. The engine behaves just the same in the air. BTW the reason I used the expo is to get the throttle response correct for the position of the stick. Oh, one other thing, the DL seems to perform much better then the DA from what my hardcore DA friends tell me. They're dumping their DAs in favor of the DL.