Overall the TIR5 seems to be an amazing piece of hardware (though a pain to calibrate at times.) but the TCP really lets it down. (particularly when i threw away the regular clip thinking it was a part of the packaing *facepalm*)
Is there any chance of a replacement TCP or at least a discount?
I hope from the amount of posts around about broken TCPs NaturalPoint is working on a improved clip

Edit: After looking through a few threads i noticed you say to contact through Help.natrualpoint.com, i have lodged a ticket there.