ThermoQuad rebuild kit weirdness

NAPA (Echlin) listed three different kits. With the first two I tried, the fuel well O-rings were too small and jiggled around in their bores, but the third kit that I ordered had the correct-sized ones. Some of the TQs must have used different size O-rings (smaller than the ones in mine), I guess. If you use the wrong size O-rings I'll bet the carb would leak like crazy.