I picked up a Ishapore 2A a few months ago. The bolt was stuck closed. I was able to get it open. I took it apart and began cleaning it up (lots of cosmaline on it). Today i got around to finish cleaning it and assembling it. Once assembled the bolt operated as expected a couple of times. I engaged the safety and tried it. The cocking piece moved forward to half cock position (?) and now i cannot get the bolt to move. It is stuck in the closed position. I a pretty sure I had the safety installed in the correct position. I cannot get the cocking piece to budge either. I removed the safety but that did not do anything. I am not too experienced with these rifles so any help on resolving my issue would be appreciated.