I've owned an RCBS 2000 progressive press for 7 or 8 years. It developed trouble with the primer feed system and I called RCBS customer service.
The very helpful guy took me through some troubleshooting steps, they helped but didn't fully solve the problem, we talked about replacing a couple small parts, then he said, "I'm not completely sure that will do it and I want you to get fixed the first time, I'm going to go pull a complete new shell plate assembly, I'll run it myself to make sure it's indexing properly, then send you the whole thing."
Four days later it was in my hands, installed in the press and working perfectly. No charge.
Lifetime warranty and great service.