Understood, and to avoid that problem, I attempted to run an empty strip through. No go.
That being the case you may have to take the primer feed apart and hope there's just a stuck primer in there and not a broken piece hanging it up. That will set you back a few days until RCBS sends you the fix.
Got to take my wife to a movie....when I get back, I will answer the rest of your post. 10pm-ish. Mountain time.