[ithacaartist]

Three times the old price of the adapter would be worth it, in terms of time spent making it and dollars spent if hiring the work out or making the piece instead of spending the time at otherwise paying work. Bit I swear it isn't that complicated, just a stock piece of steel 1/8 x 1 cut to length, with the rear end beveled, or radius-ed as in the blueprint, two to four countersunk holes just about anywhere reasonable that will catch the receiver, and the notch for the latch--again, located by the blueprint. For the receiver, one could use a couple of pieces of 1/8 flat bar clamped on either side of the material to be removed, perhaps shimmed up a few thousandths to make sure that a tad more than 1/8 of the base remains. One could hacksaw the rectangle of steel with its lug from the body of the receiver and finish it up with careful grinding and filing. The side plates would keep the methods of removing the steel from going too far. Just have to be sure the front end of the cutout is cut square. This would save any money spent for machine work, and although it might take a while to do it carefully, it's a pretty straightforward project. All the surfaces addressed will be hidden once it's assembled, so no sins showing when done. The machinist said he would saw out the bulk of the extra stuff, as it would have taken too long to hog it all off with a mill cutter.