Good evening to everyone,
I'm a new member of this forum.
I'm an italian shooter and, first of all, I would apologize for all the mistakes I'll do writing in english; I'm not sure about my english level.
I have your same problems with dillon 550b primers system: my primer bar doesn't work, it hangs up.
I'm forced to manually move the bar back.
I cleaned, polished and lubed it as you suggested but without results.
I made some tests and I noticed that without the spring it works well but, of course, the bar doesn't goes in.
Is the spring the problem?
I would weaken the spring but I'm afraid of breaking it.
I hope the mail message is clear.
Could you help me to solve this problem?
Thank you in advance.
Massimo.