Being new to boating after 30+ years, I find that either things have changed or my memory loss is worse than I thought! Anyway, after a few minor prop skirmishes the last few months, I had to replace the plastic drive hub in the prop. After reassembly, I noticed that the prop shaft appears to be slightly bent. I'm talking a few .001", but you can visually see it when rotating the prop. The prop appears to rotate in plane, but if you watch the hole in the center of the shaft, I can detect a little off center rotation. I need to know the permissable runout on the shaft, and if it is bent, how big a job is it to replace it? Are manuals available for this motor? It is an '04 250 Saltwater. For the past few months, I have noticed a slight vibration at about 2K. If I have rods in the port storage rack, they rattle. Above or below that speed, it seems smooth. I have not hit anything hard enough to have any visible damage on the prop. The final blow came on Saturday. Doing about 10mph in 40' of water, I grazed a treetop. Not a solid hit, but just enough so I felt it. All help is appreciated.