I have a 1989 Mastercraft Prostar 190, and I recently installed a new drive shaft. I checked the shaft coupler and transmission coupler to within .002'' of an inch. My question is, should the drive shaft turn easily by hand when the boat is in neutral? It turns very easily right now by hand and I am affraid that something is wrong with the transmission that I caused by installing the drive shaft improperly. The transmission was rebuild about five years ago.