87 V-20 Steplift/Sea Drive

I got this local for 500, it has been sitting for about 5 years, was totaly green when i got it, had the old gas in it and the fuel lines and the carbs, re jetted the carbs with new jets have had it a few times and it seems to run pretty good, had it up to about 4400 and running 42 as to my gps