I took my luger out to shoot the other day and discovered that the locking bolt will not lock any longer when the breech is open. It only stays in the proper position when the breech is closed and the gun is loaded. I am a newbie when it comes to lugers, but I believe I discovered the problem. Last time I disassembled it, somehow the locking bolt spring came out and I didn't notice it

. I was wondering if anyone could help me with some pointers on how to install a new one. I haven't been able to find any detailed videos or pictures of how you go about putting the spring in, and I am a little hesitant, don't want to break it. Thanks