Two of mine are pretty new and one is what I'd call older. Can't find a split ring on any of them although I don't doubt your memory, (I often fault mine).
Anyway, I fix all tube feds the same way. A little, bitty squeeze of the magazine tube with a pair of vice grips,(up there close to the locking slot). It helps protect the tube if you tape the area first. <img src="/ubbthreads/images/graemlins/wink.gif" alt="" />
Last edited by twodogs; 11/03/05.