Looked at one of the crossbolt gun last year. Interesting in buying one, but not one that had trigger problems like the one I looked at. Ben Loving had one on his site with "noted trigger issues" for some time now. I have seen three single trigger cross bolt guns and they all had trigger issues. I have read that the guns towards the end were much better.

I suspect that Lefever was debugging his gun design as he went.
I agree there were Lefevers swan song but I suspect that if he had lived fove more years they would have been debugged and as good as any period gun. Funny he never gave up on trying to get the high grade sales. High finish, extra nice wood, engraving, nothing was spared. Either he thought that the extra profits in high grade guns were vital to success or he never thought of himself as anything other than the maker of better graded gun.