Moved this to the CCM section.
Step 1) Clean the bottom tube. Take out the IVG, Spring, Hammer - clean the bottom tube with alcohol - do not lube the hammer when reassembling.
Step 2) Clean Reg - double check input settings - and check its recharge on your tester.
Step 3) Double check timing - make sure the back block is at 1/8th inch from the back of the body when firing in auto trigger.
Step 4) Give it a try - See if that fixed it - if not - and this is an odd one - check your trigger for excessive wear. If you have a HUGE divot in the trigger - order a new one. It can cause the AT to release early and cause odd issues.
Keep us up to speed - we will get this fixed!