Carl - the two Carters on my non-Chevrolet shop truck have been untouched and trouble-free for 19 years (knock on wood )
They have some fuel stains, but start and run perfectly.
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