I have a 2005 135 I had an issue with the motor not going into reverse. The plastic linkage on the motor was cracked. I had that replaced and replaced the cables as well. It still would not shift into reverse with the cables hooked up. The boat has twins so I compared the two motors when they were in neutral and noticed that the problem motor has alot of end play in the verticle shift rod when it is in neutral. The other motor has almost none. I pulled the lower unit and drained the oil. Which appeared to have some water in it. The play seems to be in the shift mechanism in the lower unit. THere was no metal chips or pieces on the drain plug. Can the shift mechanism wear out in the lower unit? How much play is too much?