Own two Seadoo PWC 1994 GTX 3-Seaters w/580cc engines (love them, Seadoo is a great product). Trying to pull jet pump on one without damaging it. No luck, from web chat looks like it should just pull straight out. I have the CD Manual and have reviewed it and web notes. Need to pull it and replace wear ring and damaged impeller, any help/notes? Can not pull housing, have not undone any internal hoses or lines under seat. Looks like I should?