Well, I'm glad I'm not alone having problems with my Super 1050 -- my SECOND one! The first was an absolute POS. For starters it was set up for 38 Super and they shipped it with a large primer feed bar. Move the handle - dump a tube of primers all over the reloading bench. The tech at Dillon was an real smart ass and pretty much giving me a hard time because I hadn't immediately figured out how to diagnose the primer feed problem with the 1050 that I had for all of two hours. While he as giving me crap ideas to solve the problem, I noticed the primer feed bar hole was too big. I had to call back and got another tech who identified the problem instantly, even before I could tell him what I found wrong.
A week later when the new part arrived, I spent an evening setting it up. First, the powder measure was varying something like -.3 to +.6 grains! Primers still would not feed right, and the thing was so jerky, it was unusable. That Saturday I called and literally spent about 5 hours on the phone with a Dillon tech. Several screws were WAY overtightened and for loading Super and .40, Dillon recommends cutting back the shell plate detent ball spring 1/2 coil at a time until it operates smoothly. We got the charge variations fixed and improved but did not eliminate the jerkiness. We never did solve the primer feed problem so I sent that back and they sent me a new one.
The second one was in a little better shape though some of the screws that were over tightened on the first were also overtightened on the second. I had to use a 1 ' piece of pipe over an allen wrench to break the shell ejector screws loose they were so tight. I still had intermittant primer feed problems too; that was caused by flashing burrs on the primer follower which was making it hang up in the tube.
The auto-indexing is still too jerky and keeps dumping powder out of my cases. I've cut probably 2 full coils off the ball detent spring - only thing left to do is loosen the shell plate a little more.
Given the amount of time I have to spend cleaning the thing because it keeps dumping powder, my productivity is probably half what I can do with my 550.
Soon as I'm back from vacation I'm giving it one more R&D session but if I can't make it work better than it does, it's going back and I'll either get a 650 or a used, older 1050. BTW, a friend just got a Super 1050 and is having exactly the same problems.
Bottom line is I think Dillon replaced probably the finest reloading press ever made with a piece of junk. And I'm not changing my powder to something that suits the freaking reloading press. For the price of that thing, it should load any qaulity powder/bullet/case/primer quickly and without errors.