There is/was a big discussion over on the brian enos forums about the dillon priming tubes.
Check the plastic tip and give everything a good cleaning. Some guys add some weight to the top of the primer rod. I use a piece of .44 mag brass over the top of mine. That seemed to provide more positive feeding of the primers.
Thanks for your reply anomad.
Before I do anything (like shooting this press with one of those 44mags in the pic) I'd drink some beer and have a cigar.
Check out the follower (thats 25% silver) I've made a long time ago vs. the original one in the pic.