I am trying to install the sterndrive and it stops about 3/4 of an inch before making it all the way in. The shift cable is sliding in alright. The shift tab is lining up. The splines are engaging (I was actually able to turn the engine with the prop). I did align the engine right before trying to install it. I am lost. I thought maybe a gasket was in the way, but I even changed gaskets with no luck. The only thing I can think is to clean the splines out again and try once more. Has anyone else had a problem like this? BTW it's a 1973 140 HP Mercruiser, and the engine and outdrive have been together before.
THANX!
THANX!

