Does anyone have the size of the O-ring that fits on the OD of the threaded end cap for the 720 power plenum? I can't find any drawings or specs for the 720 PP. I did a swap out to the larger PP but the air shoots right out the threaded end cap. The O-ring appears to be the same exact size as the one used on the smaller 54cc plenum? On the original power plenum schematic it would be O-ring #B23. I'm wondering if they put that one on it instead of the correct size? O-ring looks flat in groove & doesn't really crown over threads to give a good seal? Tried the store in utah where I purchased it but they're to swapped to answer questions. Bet if I was buying another gun they'd make all the time in the world to answer questions.
