So i have the 9856, but it keeps restarting itself when volume is high. I did some experimenting and found out it does this because it vibrates so much. I took out the receiver from the dash and just held it in my hand, turned up the volume, it never restarted on me. When i say restart I mean, the HU completely shuts off, then turns on after a second... Anyone else have this problem? Or is there anything i can do to make the HU more secure and stable in the dash?