I have a Honda service manual and have ordered parts already. I'm replacing the engine cover, so the mechanical seal, bearing, and shaft need to be installed. I have the new cover, part# 19217-mal-300 which is the mechanical seal. I also have part# 91201-965-000 which is the oil seal and part# 96100-62003-00 which is the bearing. I haven't removed my old cover yet to verify parts placement. My mechanical seal came with a smaller bushing/seal that I don't see in the service manual. Where does this go?