well check it out ,i will use my set up as an example ,so you can have some parameters to go off of .i cant say that it will be exactly what you need but you can use it as a guideline to help diagnose your problem.i am running advents d-23 program with it set to curve 2 now this is a fairly aggressive curve (compared to a stock curve) adding timing down low .with a wet pipe set up with both bottom and middle screws closed and top opened about 3/8 -1/2.prok f/a on my intake (if your going to keep your stock intake,remove one of the three f/a screens per carb minimum and the trumpets on your intake.)also i found that a 2.0 needle and seat works really well but if you go this route you might end up having to adjust your pop off up one spring rate.all the techno mumbo jumbo aside it sounds like you might be set up on the lean side since the mods you have done.i would start by adjusting your low speed screws out until you can get your boat to idle good before making any other adjustments (you should do this at the water so you can test it).also last but not least ,plug check ,you don't want your plugs totally dry when your at low rpm they should look oily when coming in at like idle speed and golden at mid to top.hope this helps jetting is difficult to help with unless you know all the pieces to the puzzle.hope this helps.