F161 Part Question

[prsurf]

I recently acquired the F161 and are having a hard time finding a suitable screw to use for the chicken strap. I have contacted the Trident folks and twice they sent the wrong sized screw. I would assume it has to be approx 10-15 MM longer than the stock screw (100). Can you advise as to where can I source these.

Thanks,

Prsurf