You should read the owners manual thoroughly, it covers a lot of items and is well done. Most problems can be solved by reading the manual. Make sure you complete each cycle of the handle, pause slowly on the downstroke. If you ever try and back off on a downstroke you will break the primer transfer tray. Almost everyone breaks at least one until they learn this, that's why Dillon includes an extra with the machine. I've never had a problem with crushing hulls or seating the primer. The manual should explain the adjustments necessary to correct these problems. If you ever are stuck, just call Dillon. They offer wonderful customer service and parts are always free. I've had mine about three years now, loaded a lot of shells and went through a learning curve too but it is a very good machine and I am completely happy with mine. Like with any reloader, you need some mechanical capability. Don't try and set any speed records with it. It will load a lot of shells in a short time but if you are spilling powder and shot you have some problems to clear up. If you cannot figure it out from the manual, better call Dillon and they will have you up and running in a short time. I would not suggest a Dillon for someone's first reloader but they will work very well with a little experience.