eccpm requires 3 HIGH QUALITY + MATCHED servos. if you dont have this, it wont work right. your TX must also be capable of supporting a 120 degree swash. you might be better off buying the metal lever and elevator system.
I have converted my X 400 to CCPM and used plain old H55's. It hovers hands off and flys better than my TRex CDE.
I flew it last night for the first time with my new Spectrum radio instead of my Eclipse 7 and no more glitch.