In regards to JT, I’m just a big fan of the cat, but haven’t seen it in any of the current catalogs. It makes me think that someone ran it over with their car and just not letting the rest of use know about the crime.
P.S. Tweak, I see you have had your share of bad (defective) keys and just lap everyone in from the start too.
My biggest peeve is when the carrier hole to keyhole passage doesn’t line up and you have to elongate the keyhole passage to get the two into alignment. I haven’t seen any that haven’t lined up recently, but more than a few needed to be either lapped, or a blue loctite used as a sealer/gasket between the key to carrier to stop the leaks between the two, due to the threads being tapped for the keys screws and the top of threads not being beveled back down with a counter sink before heat treating.