Worked on the boat Monday night.

Changed all fuel lines including the priming bulb.
Made sure there were no leaks at hose fittings
Replaced engine in-line fuel filter
Decarbed the engine
Pulled and cleaned the plugs- all of them looked good before cleaning but I was already greasey so why not.

Runs much smoother now but I think I still hear an occasional miss at slow idle, seems to smooth out when idle speed increased. Next need to find out which cylinder is missing and why. The wires look good but you never know.

On the whole, it seems like good progress. Will give it the real test Thurs night.

Thanks everyone for your help and suggestions.