Tools you need — two open-end wrenches 3/8 inch, 7/16 inch, (the actual sizes you need may vary) and a metal spacer about 1.25 inches wide.
Put the 3/8 wrench on the mouth piece stem, it should be a snug fit, resting on the top of the lead tube.
Put the 7/16 wrench on the mouth piece just under the bowl (you might need a 1/2 wrench instead).
Put the metal spacer between the two wrenches so that it is touching the mouth piece. Any strong metal will work, but it must be a perfect fit. I used a large flat file for a spacer.
Squeeze the two wrenches together. The spacer between them will act as a fulcrum and the mouthpiece will pop out!
If it doesn’t work, you may need a larger spacer. Make sure it is close to the mouth piece for best leverage.
