FWIW I always try Sea Foam before I pull a carb , Lots of people don't like Sea Foam but I sure do.
I suspect the Angle of the dangle.
Sometimes when my stuff isn't working right I find it helps to swear at it, and even yell at my wife a bit. Never fixes the problem, but sure makes the vein in my forehead look cool.
I am guessing your best bet is a trip to the mechanic shop, they can hook it to the scanner and see what the issues are. Seems its always ended up cheaper for me to have a mechanic look at it, and then fix it, rather than me spending a bunch of time and money fixing stuff that maybe isn't broken, then breaking stuff trying to fix it. Plus you are wasting fishing time working on it.
Good luck, if you are out west Paul at Dakota Sports does excellent work.
Where are you located?
Very possible the angle of the dangle and the motion of the ocean are the culprits here.