I'm calling BS on this one. Sounds like you got yourself another one of those Kimber jambomatics and no one wants to bite the bullet....
Mine went to Yonkers twice, now it has never jambed since the last trip.
Proof they can fix them if they want. Too me anyways.
I put my handheld belt sander in a vise and went to town.
I fine tuned it with a dremel sanding drum.
A friend came over in mid butcher and said, "What in the .... are you doing to your glock" ?
It turned out great, can't tell it was not bought that way. Thanks, Ab.