Dave,
I would probably have a collection of Tobins now, if so many of them weren't messed up in that one regard. I don't know if it is always the guns fault, as I know of a couple of examples where the guns were passed down to kids after the owners bought spanky new repeaters, and the kids were allowed to shoot, play, disassemble or otherwise do whatever with them.
I HAVE seen a disproportionate number of off the face Tobins. That's just the way it went in my search and observations.
As it worked out, I fixed up the nicest one I found. And, I realized, I sure don't need more than one Tobin around my house.
Mine has not so much in common with what it looked like when new, but, it fits me, and I shoot it well. Hope you don't think that is too badly done!
Best,
Ted