Ive got a promark gps shadow drone. Had a defective battery where the drone would barely lift off the ground, and then when it tried to lift off again..it tipped backwards, no blade guards were installed…so the back 2 prop blades touched ground (dirt) while spinning for about 4 seconds until they stopped on their own. I took it apart, cleaned everything..nothing binding…now when i sync everything and push the 1 button take off…the propellers move just slightly..more like twitch..and then it goes into re-syncing the camera by moving it up and down as well as flashing the lights quickly. Do you think its in need of a new IMU board?? I was also attempting to use a 3s Lipo battery instead of the stock lithium. The problem im having is with the good lithium stock battery. Help!