Hey, thanks to Mike and all of you for those replies,

Mike, you probably save me from crashing this airplane because I didn`t realize what you explain about servos and long arms, I´ll better get some good servos for this job because actually it is using HS475 on elevators and those are not quite strong as a 625MG which already comes with longer servo arms and metal gears, I'll try to get some digitals but probably won`t have the money right now.

Last weekend I couln`t try anything you guys post here because my 91FX with 2 gallons of omega 10% fuel after a 5 minutes flight died on me and after landing I could not turn the prop in any direction so back to my home I took the engine apart and found the two bearings really rusty so I'll change them and try again.