Troubleshooting the Dillon 550 priming system

Troubleshooting the Dillon 550 priming system:

If you have been using your 550B for some time and all of a sudden you're not getting primers to feed consistantly, and the primer slide and bearing are both clean, check to see if the primer feed stop pin is being pushed out all the way.  If the stop spring on the back of the housing is not pushing back about a quarter inch at the bottom, it's not feeding.

From my experience, the operating rod gets a little bent out of shape and won't push the primer slide out all the way to pick up a primer out of the stack.  The good news is that it's a quick and easy fix, just remove the operating rod from the press and bend the lower end back slightly to put more pressure on the primer slide's roller and reinstall.  This should fix the problem in short order.