I was getting knackered hands using a Lee hand primer so I bought one of these in the US in May of this year - but the primers weren't seating correctly from the feed tubes so yesterday I emailed RCBS suggesting I might be doing someting wrong, and received the following reply -
You aren’t doing anything wrong. We had some of the primer plugs leave the plant that had 1 ½ extra threads on them allowing them to screw too far into the rod leaving a much larger gap between the primer cup and the primer tube. I will send new primer plugs and sleeves to you……Please reply with your full address and we will send the primer plugs to you…….
If anyone else is having the same problem it might be worth contacting RCBS?