Carburetors...

  Rebuilt a carburetor to fix a guys lawn mower.  Mower wouldn't run.  Re-rebuilt the carb, super-cleaned it, soaked it, recleaned it, replaced software.  Mower wouldn't run.  Jerry rigged up a different carb to it and it ran like a champ.  Replaced the carb and it ran like a champ.  Only thing I can figure is that there is some small orifice that's clogged that I can't get to and blow out.  I plan on troubleshooting it some more, we'll see.  Thankfully I am finished with his mower, and he is happy that it's working great.