I have a Trex with a hs-50 tail servo and helihobby zoom gyro. Whatever i do i cant seem to get the tail to be solid. My heli always wants to turn left. If i hold the right rudder a little i can hold it still. So then i put in some trim on my radio and it doesnt seem to do anything. My gyro setting seem to only be tail wag or turn left.

The servo i made another hole in the arm slightly lower than the first hole so that its closer to the servo. This seem to do nothing. I also noticed that the stock tail has alot of slop in it i can hold the to tail rotor blade tips and with very little pressure move the tail like the servo does.

do i have to make physical location servo changes to correct this?