I'm wondering if anyone has had problems getting their water pump seal to seat properly. Before disassembly I could rock the impeller slightly back and forth. Ive got all the new parts installed, bearings, snap rings, seal, and impeller. However, I was not able to get the seal flush with the face of the water pump housing. I lubed the shaft with lithium grease first and I used a large socket to drive it in, gently of course. There is friction now when I try to rock the impeller. I believe the seal is touching the back of the impeller. The inner bearing was seated against the back of the water pump housing. The seal seemed to be the same thickness with no difference in back spacing either way it was installed. I know if it has to come apart I will need a new seal. Any suggestions? The rebuild kit I used is from KTM Twins. Thanks.