....is this fun, or what ? You've got a half dozen guys
all trouble shooting your motor....right here on the
Universe....

Shame on me for not knowing that your motor was
bushed.... Here's an idea....determine where
the fuel mist is coming from....and resolve the problem.

See this picture....a typical bushed motor. See the thin shim
that goes between the prop hub, and the case ? (some refer
to the prop hub as a drive washer) That thin washer is there
for a reason....is yours missing ?

That thin washer on a bushed motor acts as the front seal.
Some refer to it as the thrust washer.....however, it has
nothing to do with the thrust of the crankshaft. Keep in
mind that the propeller pulls the crankshaft forwards....not backwards. There is no washer on the front of the engine....
that has anything to do with "thrust".