Their current production stuff doesn't have lock tight on them like the old ones. That blows if the pivot screw is lost! You can contact: thehollowgrind.com and see if he will take it (RMA) up with MT. He's located in Miami, FL. Let us know!
Worse case, have a screw custom fitted or sell it as a parts knife.
Dave is no longer working at MSAR (rifle) side. My brother had an issue with their AUG clone and Dave went the extra mile to get it corrected.
I recently found an exec Scarab for sale, SE coated serrated blade, no markings, pocket clip has Scarab and SE marking. Handle has claw logo and born date 03/2008. Also has USA above the claw logo, but no serial number anywhere. Has box and all paperwork. I don't doubt its MT, but no S/Ns are out there. Good price, but the no s/n has be concerned down the road. MT is very hard to get a hold of.