Getting ready to put my 1994 4.3L back into service for the season and wondering if I should do a timing/carb check to verify everything is till within spec. I did a full tune-up last fall during winterization (plugs, cap, rotor, wires, oil change, fuel/water seperator). I bought the boat back in late July last year, everything seemed to run fine and work ok last time out. How often are you guys checking/adjusting your engines? Once a year before begin put into service, during winterization, midway through the season, etc? Adjust on muffs or in the water?