Hi everyone,
Just thought I'd chime in with my recent service experience with T/C. I have an older used Hawken that was breaking flints after five or six shots. According to the advice I got here, and that was subsequently confirmed by a look at the TC website, I sent back the lock with a note. Didn't need to call or get an RMA number.
A little less than one week later, I just received a replacement lock in the new style and a spare frizzen (which I asked for). I tried it out with a new French flint and it seems to self-sharpen now rather than break them.
Very good service, no questions asked, and the replacement works as advertised.