OK, I hope someone can help me with this. I spent 4 hrs on Sun. trying to install my lower unit. I had the shift shaft stem turned all the way to the right (clockwise). The front shift pin was pointed to 12:00'o clock. The prop was locked in on a counter clockwise spin (forward) and the shift lever was the whole way front. Why didn't this unit go up into place? I turned the prop counter clockwise but yet it would not go into place. It stays about 3/4" away from the top unit. I am also certain we had the water lines inserted into one another. Any suggestions are appreciated! Thank you, Bob