Another vote for a probable cracked diaphragm.

So far, the supposedly ethanol-resistant orange diaphragms appear to actually be ethanol-resistant. What a nice change when something actually works as advertised !

Bill - thanks, but no longer have the necessary time to rebuild carbs.

Jon

Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify.
If you truly believe "one size fits all," try walking a mile in your spouse's shoes!
The Carburetor Shop