Hi Rich;
Cleaning anything that has junk that will flake off and not dissolve will
clog something else. Jets, idle circuits the slide on the variable ventury
or even the screen on the needle valve will all succumb to unresolved chunks
of dried fuel and varnish. So, take it apart, clean it, use solvents that
are made for this purpose. And while it's apart, look for wear. I had a
carb that would not idle for anything, I found that the float was binding
because of a warn float pin. Threads on screw holes stripped and vacuum hose
just clogged. With out looking you will never see the problem. And, if
there is "Dust-Rust" in your tank you will never see that if you just dump
in a can of what ever to clean your system.
Bill Colford