Bunk,
I'll second what Dave said. Dillon will absolutely make it right if you have a problem with the SDB. As a fer' instance, I was given an old Square Deal (so old it was before the "B" model). I used it for several years, and the connecting arm broke. I put is aside and used that as an excuse to buy a Dillon 650.
A few years later my son wanted to start reloading, so I thought I'd see what it would take to repair the Square Deal. I called Dillon, and they said to just send it back to them. I did so after removing all the accouterments (shell plate, primer feed, etc.). When I got it back in about 2 weeks, they had completely refurbished it, including new bushings everywhere, put a shell plate on it and installed another primer feed mechanism - and all I had asked about was the connecting arm.
I"ve had a few minor parts needs on my 650 over the 10+ years I've had it and they always ship whatever I need pronto - at no cost. Great people to deal with.