I have a 1987 Bayliner with 5.0L motor and a OMC Cobra outdrive. Last summer I replaced the upper drive with a rebuilt.I used the boat no problem for a month or so and it started not wanting to go into reverse, but would go into gear after 2 or 3 tries. Would just hear gears grinding untill it went in, so i didn't use it again till I pulled the boat out for the year and it would not go into reverse at all forward and neutral fine, reverse gears grinding. When I put the drive on it took me several tries to get it, both gears and neutral adjusting the **** rod and then the shift lever. Did I not adjust the shift rod properly or do I have gear problems? Thanks for any help.