I just got home from flying with a 22X10. The difference was amazing! Level was at about 2/3 power and uplines are now unlimited. I will still try some smaller dia props with more pitch just to see if I can get any better but to be honest I am very happy with it as is. The first flight of the day I went through the advanced sequence once and landed. When I pulled the batteries one was puffed. I hooked them to the charger and the good one read 18.8V and the puffed one 15.3V. Definitly an issue there. The second flight I just fooled around and landed after 11 min. The motor was just barely warm as was the speed control. Batteries were maybe 120-125F so I'm pretty sure I'm not pushing anything very hard. It needs a touch of upthrust as uplines are tucking towards the gear but CG is now where I want it. Not sure what mixing will be needed yet until I get that squared away. Always best to adjust one thing at a time.