I tried this when it first dropped, didn't work and I just got around to trying it again as I need to order some things from SCS and I like this design but I can never get the Kabuto TURD to work. I don't know what I'm doing wrong but this is as far back as the BCG will go. I tried pulling it back further and when I did, it locked up and had to push the rear takedown pin out, let a small gap pop up and the BCG flew forward.
I just can't get anywhere with this. I'm going to try the Kev remix as it takes milspec 3 pos but I wanted to see if this worked to begin with, which it didn't.
You need to remove material from the front leg of the trigger timing bar until you get clean bolt cycling. Ensure everything is lubricated. Then, once the bolt cycles, perform a function test starting with the safety. Once you establish that the safety is functional, attempt to function test in SEMI. It will likely reset the trigger. Slowly remove material from the same front leg until it no longer resets in SEMI. Then complete a full function check of all positions.