I have the same boat 1989 sport sedan mercs 454's and have whittled my list down to just a few minor projects. our survey missed the rotten wood in the arch which I replaced this summer, pretty common on this boats I hear. Just a lot of hard work and sore arms from reaching out to multi tool...
i am pretty positive I looked at that boat on lake union, it is the only one I have seen with that hard top, almost three years ago, and the starboard motor had a bent valve on #2 at that time. which the owner was aware of.