Also had a very pleasant experience with Redding customer service. Just bought .308 Win dies, and my first time using them had problems seating Berger VLDs and 110 grain varmint bullets (low-recoil practice for my son). I simply couldn't get the bullets to seat to the proper depth, as the die bottomed out before proper OAL was reached.
Redding rep quickly said that he bet I was using VLDs (I hadn't even told him that part yet). When I confirmed, he identified the proper seating stem for that bullet and said it would be in the mail that day, no charge. Received it 3 days later. I was very pleased, and now I have flexibility in bullet selection for that particular caliber.