When my trolling motor is on the highest speed, and I am trying to back up the boat, the motor bracket always slips so that the motor is tilted forward. Is this by design? The problem is that it doesn't easily go back to vertical, so when I pull the motor out of the water, it doesn't want to go back into place on the boat. It's sort of stuck in that forward position and the bracket won't fold up properly. Any thoughts?