ok!  I sprayed carb cleaner, but it didn't make much of a difference.

Here's the problem:  I got my  friend, who's a mechanic, to adjust the two
screws at the front of the carb, for idle mixture.  It seemed to run fine,
untill I got half way home.  Then I let my foot off the gas, and she didn't
slow down.  I put her in Neutral, at a red light, and she was running way
too fast.

When I pulled into my drive way, I tried to kick it off fast idle, but it
wouldn't.  I shut it off, and when I got out, I smelled gas like crazy.

If the choke is close, it will burn rich, am I right?

Why would the choke close, when the engine in warm.  My mechanic adjusted
the fuel/air ratio, so I think it's just the choke coksing when it
shouldn't.  As far as I know, the choke should open when the engine is warm.
The engine war plenty warm; so why when I was half way home, and the engine
was plenty warm, would the choke close?

TIA.