I finally got the Saiga out today for the first time after putting the Ultimak and red dot on it. Well, it's chambering the rounds fine but the bolt's not resetting the trigger. I was having to charge it by hand, ejecting the chambered round so it'd reset the trigger (works has it should by hand but not firing). I thought that since this was the first time out with the Ultimak on it that might be it but I replaced the Ultimak with the original gas tube and it's still doing it. Any suggestions?