I own one of the ones Chris Matthews (Longshot Rifles, LLC) reworked. He installed a decent (Badger, I think) recoil lug, reset the headspace and bedded the receiver. He done good. I worry no more about the miniature recoil lug that it came with.
"Fenced yards ain't hole cards and like as not never will be, reason for rhymers and old five and dimers like me."