Needing some grade 8 hardware (or whatever is used to mount motor to transom/jack plate. 5/8" bolts, washers, and lock nuts obviously. And which sealer is the best to to seal around the bolts? I'm rusty on this and haven't had to do this in probably 10 years but do have a friend that has all the right tools to get this done with as little drama as possible. Thanks in advance.