I noticed this mount isn't 20mm like the CM3 body.
Other possible solutions.
Get a tube of two part putty epoxy. Mix by kneading the two parts together using gloves. Wrap your mic in wax paper or coat it with something you know won't allow the epoxy to stick to the mic body. Some use Kiwi neutral shoe polish to keep gun barrels from sticking when they use this stuff to bed barrels to a stock. Then wrap the mic with enough electrical tape that it will be centered in the mic mount. Roughen the inside of the mic mount to give the epoxy something to help stick. Make a bead inside the mic mount. Insert mic and wait for it to dry. Hopefully, the mic doesn't stick to the epoxy.
Tried using 0 rings--too thick to fit between the mount and the mic body.
Another option would be to wrap the mic body with a thin piece of rubber from something like an inner tube.
Tried a couple of black cable ties on the mic body, and that seems to space it correctly. Not sure if they would scratch the mic body over time.