I bought a seal kit for my 200 merc. and I cannot get the brackets off the engine so i can slide the 2 new seals over the piston on either side. Is there some kind of trick or are they just stuck from corrosion? Do I need to heat it up or put a gear puller on it? I just don't want to break it. Its a seastar/teleflex hydraulic system the kit # is HS5157. Any help would be great!