firecat sts problem

[slayer73]

I have the 09 firecat with the sts and the set screw came loose and when I went to tighten it up it (the allen head)stripped out. I need another one ASAP because I have 5-spot leagues tonight. can anyone tell me what size I need? I am thinking it was metric for some reason and when I used sae allen wrenches it stripped out. Thanks for your help!

edit- and btw it scrapped up the black on the sts like you would not believe!

[ezbite]

mine uses a 2.5 and the rod will get scratched because your turning a steel screw into an aluminum rod.

[Pa. Shooter]

X2 on the Set screw marks. What I do is mark the STS rod with a marker...were it needs to be ( The set screw ), and take a flat file and file a flat on the STS rod, the set screw locks up better.:)