I have a Fred Bear TRX and wish install a NAP Quicktune 4000 on it. It came with a lower cable guard, for the NAP 4000 I need an upper cable guard. It has the 3/8 hole for the cable guard, non-threaded I believe, do you know where or what manufacturer makes a cable guard that will fit this bow if any. I looked at Martin Archery and they make one that may work but I'm not sure, just throught I'd see if I can get any information on here before I try that. Thanks for the Information...