I just changed the water pump impeller, no problem. Now i can't align the upper & lower shift shafts. When I push the lower unit on, the upper shift rod moves up and does not slip over the lower shift rod. I tried holding the upper shift rod with vice-grips to prevent it from moving upward but it won't slip over the lower rod. Can the lower shift rod be turned to help it align. The drive shaft is ok and is aligning. <br />the lower unit comes to within 1/2 inch of connecting with the upper housing. Any info would be much appreciated. Sullymate