Had quite the glute workout today. Went for a test flight of my Cinestar X8/Wookong flying a Ronin-M, A7s with Tokina 11-16, and Connex Amimon. I have put about 60 minutes of actual flight time with this copter switching off between 5lb weights and the Ronin M, but today was the first day with the Sony and Connex. Never have I had any crazy behavior like this before, she has been rock solid. Note: I have V1 IMU, which may be part of the issue. Before the flight I calibrated the compass with payload powered up and had success. Flying in Atti, she took off just fine, hit the retracts and moved forward over a practice target, thats then things got weird. I started to pull the bird back in the same direction after passing over the target, and noticed it was going a lot faster than my stick input. From what I recalled (it happened very quickly), I saw the Yellow/Green LED of Bad Compass Health and the 3 White flashes of Bad Atti Status all back to back on the indicator. It then climbed and took off forward of home position, which is when I lowered retracts and switched to Manual Mode. I was able to bring it back safely, albeit a rough landing. Extremely lucky nothing was damaged and I think I owe the safe recovery to flying FPV quads in Acro mode. Great training, I highly advise practicing with them. Ronin got bounced around from the abrupt movements as seen in the video showing it was not a pleasant flight. Upon inspection of the craft, my buddy noticed the power lead from the battery was touching the GPS mast/cable, and I think that's the main cause of the erratic behavior. The 3 white flashes for Bad Atti status have occurred before but never caused any changes in flight characteristics. I plan to move the GPS further away from batteries since its way to close. Although I am almost certain it was the power lead/old IMU, I am very nervous to fly it again and would love some input on other Wookong users. My questions: Is there a way to read data logs of the FC? Should I ditch Wookong all together or try IMU V2? Should I switch to A2 or another FC? Could the Connex/Sony be putting off an unwanted signal? Does anyone have a fresh pair of underwear? Attached a photo of copter to see GPS placement, and Video Link here, password: yikes Side note: Anyone have suggestions for smoothing out the "bounce" in the footage? I have the blue dampeners and a Cinemilled adapter plate hard mounted using the 4 point Cinestar ninja star. Switch to the 8 point ninja star perhaps?