I recently switched from my trustworthy old DX7 with AR7000 RX to the new Futaba 14SG FASSTest system with telemetry and R7008SB RX. I installed the new Futaba RX and calibrated everything in mission planner. Now my quad has a random twich where on of the mortors suddenly increases in speed just enough to cause a significant jerk, it happens about every 5-10 seconds and increases with flight time. I'm afraid to fly more than a few feet off the gound. I assume it has something to do with the PWM or PPM from the futaba and some sort of conflict with the APM 2.5? I have switched back to the DX7, anyone having the same issue? any known fixes?