Propane tank riser & Mopeka sensor retainer

I needed this to rise the tank above the mounting bolt head for the propane tank mounting tray also retain the Mopeka propane tank sensor centered on the tank bottom.  The Mopeka sensors have magnets, but they are not strong enough and it can easily shift when moving the heavy 30 Lbs. propane tank.  I used PETG, but TPU might be better.  Tanks can have different size rings, Change the parameter RingID in Fusion 360 to fit your tank.