Haven't had any troubles with throttle servo yet, did blow a jr 9100 t but it had over 10 gallons so I guess it was time, however I do have a local pro that has gone through a couple of the jr hv servos all on the throttle-we think it has something to do with the heat coming off the motor, replaced them with the new digital airtronics and no probs yet. For you guys having trouble on the throttle servos, when they go check the temp of the servo and see if it is hot, his was exte$ly hot, thinking the board or something can't handle the heet, but at $199 they should handle being lit on fire lol