I got the drive back together. I took the boat out for a run today and all seems o.k. This is the first time I took apart and repaired a drive. Thanks to Mr Gadgets for all the help and advise. He made it alot easier for me.

By the way, not only did Imco do away with the oiling hole, they made the upper section of their new shafts alot thicker as well. I don't think that the shaft will be an issue for me anymore.