If you have stock cams, you don't need a 50 pilot, or ven a 190 main.
Your issue is the float filling. Despite the float level being at ....anywhere.
You need to look at tank filter, petcock (especially if vacuum operated) fuel line and elbor to carb.
I've never seen a CV carb float go bad and if the problem just started, it makes the issue wonder even farther away from the jet idea.
It's not your jetting or float.
Start looking at an intake gasket leak. Both at the intake and where the carb meets the intake, at the donut. Check all (if any) vacuum lines coming from the carb as well.
One crack in a vacuum line that goes to the letcock, and now you have an intake leak, (lean) and a petcock that doesn't open all the way. (Lean at WOT)
“Peter, arson is a serious crime. It's not like smuggling Oriental hookers into the country, in steel drums........” ~ Glenn Quagmire~