I apologize in advance for the dumb question. I have a SA 1919A4 with in .308, I have only had it out twice. The most recent time I had it out, I had a a starter link on a belt, and when I fed the belt in that direction, it would only fire two shots before you had to manually pull the belt. When I ran the belt (with metal links) the other direction, it cycled like a champ. New links, new brass, is there a feed direction on a linked belt?