Got rid of other ESC and just got my CC phoenix 45 ESC today, haven't had a chance to fly yet but she seems to work well without cutting out...I've also put proper hinges on all the control surface as part of my rebuild which has considerably maximised the travel. I have put a scoop (half spoon) in too but further back to keep the ESC cool and I've cut a 2cm square beneath it (just behind nose wheel) to allow efficient air cooling. The AXI motor doesn't even seem to get warm so just leaving that as it is.

Joe, are you running all six servos from the BEC on the Phoenix 45?

I am going to upgrade to li-po soon but not sure which pack to get, is it worth going for 4 cells or will 3 be adequate? and what mAh would be most suitable?