I got a used Knight Disk Extreme, I got a owners manual from Knights Web sight.I get the rifle home I want to clean it so I take the bolt out, I had to use a allen wrench to get the bolt out. I never could get the bolt apart. I dont know what I turned, now I cant get the bolt back in the reciever. The manual they sent me says Disk C- Tooless Bolt.What can I do??