I bought my 550 2 weeks ago. New to reloading. During the set up, I had an issue that I could not figure out. I called Dillon, and the service rep spent 45 minutes on the line with me, patiently explaining how to fix MY screw up. I was impressed, and wrote an email to them, thanking them for having such supportive technical support staff. "Ron" if your reading this, thanks again from Maryland!