I just got my 4500 back from Lyman Products fully repaired. I am completely impressed with there customer service right now. My 4500's pressure screw broke the casting at the bottom and was turning endlessly. I feared that it would not be covered as I did not have the receipt for it but told them I had less then 200 rounds through it at most and was working on my second tube of lube. After sending it in, they received on Tuesday of this week and today I got it back in working condition. I is one happy camper!!