Hi, I recently bought a 1989 Quantum Fish and Ski that has a 1989 Force 150 hp outboard on the back. When I trim the motor all the way up it gradually goes back down to where it is vertical. The guy I bought it from thinks it’s a hydraulic leak. I’ve timed it and it takes the motor 3 minutes to go all the way back to vertical when I trim it up. I didn’t know how much it would be to fix this problem? He said I could still use the motor like that, but I’d figure it would be a pain to keep having to trim it up, or if I got in shallow water. Is it that big of a deal? Thanks for any help!