Were the stingers still intact on any of the 9242's you've restored?
The feel in my hand and the clench of the new standard I have truly is Holy Grail status but I can't get the stinger out of the stem and I can't tell if it's because someone glued it in there, or if that's how it was manufactured.
It truly is a bother to smoke and no amount of soaking, pipe cleaning or pressurized air blowing has made much of a difference in how much you can draw through it. I really should just get a replacement made but have reservations about sending it off and potentially never seeing it again..