Grum is exactly right. You send the frame back and you can count on that they WILL replace parts to negate the trigger job.
No advice can be offered on the accuracy issue you think you have since you are not sharing any of the particulars about it.
So IMO before I'd send anything back to TC I'd try to determine what the problem is. Not that hard to do if you know much about TC's, will take the time and effort to do the drills yourself to eliminate one thing at a time. If you still can't figure out yourself what the problem is, don't enlist help with it here and suspect it is not something you done did or didn't do, send the barrel only back. If its the TC equipment itself causing the problem it's more likely the barrel than the frame.