i have a history with TC.i have sent barrel and things back to TC in the
past.but if you expect TC to alter there product in some way that takes it out of spec they won't do it.as an example, i shoot a encore pistole an scooped 15inch 444 marlin, the recoil is severe i once broke the dove tail off a ring. one day i noticed the base was lose,what had happened was the screws had pulled the threads out.i sent it to TC asking if they would re tap for me, i got a call and they said that they could not replace the barrel because it was out of production. i said i dont want it replaced just please re tap the holes .they said that they could not do that ,as that would take it out of spec. so i had them return the barrel and i took
it to a gun smith and he fixed it . i suspect that its a lawyer thing with TC.