Hello all,

I am adjusting the carbs of my mc21 ta22b.
OEM Motors with wire splice and ethos exhaust. (original air box)

my spark plugs are black, the main jet 138 slow jet 38. the air screws are at 3.5 turns to be good.

I put a main jet in 132 and it seems better.

the solenoid circuit is in good working order and original.

does this seem normal to you?why am i so rich on the idle circuit