I'm changing the water pump, and when I seperated the lower unit from the motor leg the driveshaft came with it. The seal and a metal ring slipped off the powerhead end of the shaft, and I'm not sure how it goes back together. The ring is flat on one side, and has a recess on the other. I'm thinking that the ring goes on the driveshaft flat side down and the bottom of the seal slips into the recess. Do I have it right?? Thanks a million Greg