I have a 1983 70hp Mercury. The steering is seized up, I have removed the steering cable, and cleaned out the tilt tube which was one problem, but the motor itself won't pivot side to side. It should move side to side by the steering arm but doesn't do it very well. I've been able to budge it by hammering it back and forth. It's hard to see where the problem is, as far as where the corrosion/lack of lubrication is. Any thoughts or tips? Thanks!