Hi Guys....replacing the lower unit on my 83 Chrysler 75 hp with a compatible Force L/U. Couple of questions....First, I can't get the shaft to slide home....in neutral on upper and lower....any suggestions?<br /> Secondly, a couple parts came with the replacement unit that I don't recognize. There is a rubber tube-like piece that is about 1 1/8" long and 3/4" OD. There is a steel or metal ring that obviously goes with it. I don't recall seeing this and wonder if if goes on the water tube or where???... Any help is greatly appreciated.