ok guys,here is my new problem-i replaced the water pump and installing the lower unit but will not go all the way.it stops about 2 " short and i turn the flywheel and it goes about 1 more inch but still short about 1 inch.anyone have any ideas? i made sure that i did not pull the shaft up any(like my manual said not to do(or i will have to tear the unit apart).i had a problem removing the impeller and did have to lift the shaft enough to slide a small tool under the impeller and lightly tap the top of the shaft.the splines are ok thank you for the help (1984 johnson 35hp)long shaft