My 1995 150 hp ocean runner bounces on the transom while in reverse. It works, just sounds and looks bad. This started the second time out after getting a tune-up at the local shop to include new water pump, lower unit service, and "sync and link". <br />The mechanic says he can barely duplicate it, it's not that bad, but it happens every time I've taken it out since. <br />Am I ruining my reverse gears by using it this way?<br />Is he an idiot or am I, for not paying someone else to check his work?<br />Other than reverse the engine runs perfect on a 1996 21'Aquasport. Thanks for any suggestions