Update and THANKS ALL!!! Sat down yesterday and completely dismantled the carb and fuel pump
and soaked everything in brake cleaner--NAPA happened to have it on sale
for next to nothing so I saved a few bucks--blew compressed air through EVERY port, replaced the float bowl and intake gaskets and then put it all back together. Engine
now starts effortlessly without choke and idles smoothly. The whistling sound also seems to have disappeared. My only issue is that, once started, the dinghy
seemed to go directly to the Tiki bar on Saturday nite; though it did, several hours later, unerringly return to the big boat which is a puzzle as I have no recollection of driving back! Again, thanks to everybody for helping brainstorm the problem. Now if anyone has any ideas as to how to prevent the dinghy
from going to the Tiki bar I would be all ears.