My cheap vintage eBay hole punchers are about to cost me as much as a good new set. I tried using my screw extractor today after having soaked the whole thing over the weekend in ATF/acetone. After some aggressive words and actions, one of the tubes popped out revealing the fact the tubes and cylinder are not threaded- the tubes have tapered ends that fit into corresponding holes in the cylinder. Anyone know where I could buy replacements? I have already tried Weaver/Bruce Johnson/Springfield/eBay/Amazon/Buckle Guy/Frog Jelly.