I recently purchased a Yugoslavian SKS variant (M59/66) from a local sporting goods store. It was in very good condition when I acquired it, with a clean bore, smooth receiver slide, and mint condition sights. After cleaning it, oiling, and sanding down the stock and refinishing it, I decided it was time to test it. I went to the range, and took some 123 gr. JHP 7.62x39 ammo (60 rounds of it), and test fired at a 50-yard paper target. It hit, naturally, while off center a tad, but it wasn’t the accuracy that concerned me. I looked at the gun to see if anything seemed to be wrong with it, which is what I always do when I fire a new firearm, and noticed that the shell casing only partially ejected. It was stuck between the bolt and the inside of the reciever, cocked at an angle. I thought really nothing of it, as its happened to me before with gas-operated guns. I ejected it, and prepared to fire again. This time, the hole was dead-center in the paper, but the shell did not even partially eject this time. As I went on to fire the 60 rounds, I noted that none of the shells ejected in the normal semiautomatic fashion, whereas they ejected just fine when I manually cocked the bolt, so this eliminated the chance of the ejector being broken. After shooting, I checked the gas tube, which I found was clean and oiled properly. Then, I removed the gas shutoff valve housing, and found that the plug was slightly pitted. That, I smoothed on a wire wheel grinder until the pits were gone. I checked all of the gas ports, and noted that none of them were even slightly blocked.
I read a possible fix on the ak-47.net message boards involving super glue and sandpaper, which seemed a little crude to me, so before trying it, I’d like to hear any advice you people have that could fix my problem. Thanks in advance 