I have a 92 ultra with a alpha 1 drive. On my last 2 trips I noticed that while we were running I would trim up and the trim would go back down slowly on its own. Then while trailering home this last weekend I looked in my rearview mirror around a corner to see my outdrive about 3 inches from the ground so I pulled over and raised it back up.... but just a few miles down the road I pulled over again and the drive had falling a couple of inches. Does anyone have any Ideas or had this problem and how to fix it.