Its romanian, sar-3. got a high tension hammer spring on it and i clean the bolt inside and out more than normal. Ill try ordering a another and cutting it alil longer?Is it a Chinese AK? The Chinese AK have a spring loaded firing pin. Yugo?
Russian/Eastern European style is a floating pin. Clean the bolt good too. If there’s crud in the bolt it can restrict firing pin travel. Another potential issue could be a weak hammer spring. Depends on what Hammer spring you have.