after building numerous aks and a 1919 and a few ar-15s, i did something stupid and bought a cai cetme new from a gun shop that just wanted it gone. never shot it till today, and gun went bang 1 time and quit. seems the round isnt seating in the bolt head all the way when the bolt closes, when the roller block moves back the round isnt seated completely under the extracker and rather then get ejected, it falls on top of the magazine. if i put a test round on the bolt, and let it close, when i pull the cocking lever back it ejects fine. i've taken the bolt apart and cleaned it, but same results. when i check the bolt to roller block clearance, its less than .003. i believe the tolerance is .003 to .020. i've found no info for the head to block clearance to tight. cai was no help with its out of warranty sorry. i'm pretty sure its a bolt issue, the primers are struck to light to fire. any help from anyone with hk or cetme experiance will be greatly appreciated.