you can't get all the parts that you need to properly rebuild. Force - mercury never sold them. You might try an industrial hydraulics shop. They will probably have right type of items but not in correct sizes. Industrial hydraulic supply houses (the people who sell to the hydraulic shops) will have most of the parts you need. The hardest part to find will be the piston shaft scraper/wiper on top of rams. They need to be made from urethane or other material than can handle exposure to air, saltwater, UV. Buy mercury brush kits over sierra because merc. will include the woven sleeve and provide brushes with longer tails. probably better for you is to search this site for a replacement brush cap - i think that you will be able to find one from arco and that it will come with brushes and springs. Ebay is also a good place to look for force parts.