A couple days ago I replaces two arms, one attached to motor 2 and the other to motor 4. Now when I lift off the ground in GPS mode it slowly turns (as if I'm applying rudder) clockwise. If I push the rudder left about 20% to compensate and hold it there it stops rotating. All other functions are normal, Aileron, Elevator, work normally. GPS hold works as well, as long as I keep the rudder pushed left a bit. I re-calibrated the GPS, this did not help. Any suggestions would be greatly appreciated.
TurboAce X830-D, Devo10TX, RX1002, DJI NAZA-M, GPS, Telemetry,35A ESC,BL Motors, (2x) 5300mAh+TX Batt, B601, 12” props., (FPV - Immersion 600MW 5.8 Ghz AV TX, Immersion 600MW 5.8 Ghz AV RX, 5.8 GHZ SpiroNET Omni Antennas, Fatshark Dominator Goggles, FPV camera 600TVL Sony Super HAD CCD)