Backstory: I found a completely stripped SKS barreled receiver in my dads outbuilding, he told me it came from a storage building that my uncle bought. Anyway, the bore was great despite surface rust and light pitting on the outside. He, told me that I could have it and I thought it would be a good truck gun, so I proceeded to buy parts. After some bead blasting, Krylon and a little fitting, it coming together nicely, save for one detail... My operating rod wont fit??? It's simply too large to fit through the hole. Am I doing something wrong? (surely there is only one way?) I'm seriously stuck here and have no idea where to go. Any help at all is immensely appreciated. BTW: its a chinese receiver if it matters.