I am replacing the impeller in my 1996 Force 120hp motor. The kit I purchased includes Orings but when I disassembled the pump I can't find any Orings. The Seloc manual I have doesn't go into enough detail to show where I need to put these. I did notice the old impeller looks to be in fairly good condition. I had water coming from different areas in the lower part of the motor so I suspect that whoever did the last impeller replacement missed some steps. Any help would be appreciated.