Need some advice. I have a Yamaha 8hp kicker with power tilt. The motor trims down fine and smooth. When I am trimming it back up, it stops and whines a little. If I let up on the switch and press it back down, it will come up a little and stop again. It will make it all the way up with about 5 pushes of the switch. Any ideas? Now and then it will work fine.