wce,
Apparently there are many, many fine orifices and passageways in the carb that block easily. All the reading I've done indicates that if you've cleaned it, clean it again. Then again. Nothing actually "wrong" with it, just perhaps a bit too "high tech" for such an agricultural application?
Tyler, no way would people stomach those prices now. It's a shame, might help cure the disposable society we've chosen for ourselves.