Ive got a 1989 evinrude 48 SPL with a manual tilt that doesn't really want to move too much either up or down. I discovered this after I drained the oil from lower unit or replace it. Just routine stuff before getting it in the water. I wanted to put the motor up a bit to make draining and replacing oil easier. Never had a problem before. It just doesn't seem to want tot move up or down too much. Any ideas?