Looking at the log it seems that the vibrations in the y axis are the largest, although also in x and z they are pretty high (raw acceleration plot). The magnetic field also seems to be affected by the thrust (thrust and magnetic field plot). For the magnetic field you should try to place the external compass further away from the power cables. While for vibrations you should try to find any loose components or parts on the frame that are flexible or somehow can vibrate when under stress. Moreover with high rate logging we could also see the frequency of the vibrations.