I hope I put this in the right section. Ive got an Sks thats giving me a few problems. When I release the bolt forward, the hammer drops right behind it instead of staying in the cocked position. If I charge it and release it a little slower it does stay cocked. Is this a disconnector problem? Because the sear and all seem fine, I havent done anything to it. No trigger job or anything. I did replace the hammer spring with a murrays 31lb and it kept acting up so I put the original back on. Anyways, any ideas? Its very unsafe in its current condition