Just drill a 5/16 hole (some even use a 19/64 drill which is 1/64 under). Drill the hole about 2" deep with a slight upward angle. Then seat the 5/16 tap until the sound changes and hang your bucket on it. I've even done that with 4 gal buckets and don't think I ever had one fall. When you drill 22/64" you are asking the tap to seal at a point where it is not designed to seal.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.