I have the G5000t gyro system with a vigor heli. I'm new to this side of the hobby and I just started hovering a month ago. Last week I noticed the tail servo locked to the left side. Almost like full left stick. I still have control of the servo if I give it full right stick. I checked all wiring and it was ok. I turn off and on the heli and it was back to normal. My question is... Is the gyro defective or the servo? How can you tell during the flight if the gyro need upgrading?