Before I start bodging or buying parts, I thought I should consult the experts. The last round in my magazine does not normally present high enough for the bolt head to pick up the rim. It looks like the rim is not sliding up the curved surface of the magazine body properly into the feeding position. My thoughts are: 1. A worn magazine spring: solution -- new spring or stretch the existing one. 2. Rough surface (although it appears smooth enough): solution -- polish 3. Right-hand side of magazine follower bent down: solution -- bend it up Thoughts?