Bad board I think

Sorry new to this I hope I am posting in the right place.

I have been using Openpilot CC3d boards and wanted to try something more versatile so APM 2.5. I think I have a problem with the accelerometer on the board but do not want to buy another if not necessary. The Quad hovers great but after a short while just starts forward flight without any stick movement. I will fly slow forward flight and after a short time it just flies fast forward. Tried flying with other motors and esc with 3 cell the same result. I have the controller on moon gell to dampen vibrations + the QAV500 frame also dampens fibrations from motors. Disconnneted all FPV equipment and still have the same result. 

I have erased eeprom and setup 3 times using stock and tuned PIDs and have gotten the same result.

  Here is my latest setup: QAV500

           APM 2.5 with latest firmware and 2.91b

           Sunnysky 2216 Kv 800 II

           DJI 30 amp Optos esc also have tried Simonk Flashed esc

           Graupner 9" E-Props

           4 cell 3300 mah lipo

3691025245?profile=original

Switched controller back to Openpilot cc3d and no problems but would really like to use

the APM 2.5 so if anyone can help it would be greatly appreciated.

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  • Oh and the APM controller has never been in a crash or handled rough during shipment I will-called and personally picked up the APM from 3D Robotics.

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