Im currently flying the EPP FPV, and although I do have it working ok, im having some trouble tuning it, especially in loiter and turns.
Does anyone have a .pram file for this airframe? Im currently using the skywalker pram file, and have made some changes to this.
My opinion of this airframe is that you get what you pay for. Its big, cheap ($65) and quick to build but is draggy and has some not so nice flight characteristics. It is tough and easy to repair tho. I have tested this theory! Below was a radio falure in manual mode.
Also check the throw of your control surfaces.