Originally posted by techinspector1
After I've had a while to think about this, I think you'd be hearing air being pulled past the rings too, maybe????

It might be better to have both valves closed and drill and tap the block-off plate for the nipple.

"there are better ways than that"
Don't leave me hangin' Mike, please explain.
ill get you out of this mess youve gotten into tech. what would you do without me. the only way that will work is you have to put about 15 lbs of air in the plug hole, then get out your dish soap and water bottle, and spray the intake, get it all soaped-up and then watch for the bubbles. the secret to this whole thing is "THE BUBBLES". that will be a good name for it "the tech bubble check".