My family chipped in and bought me a 550RB for Christmas, and except for that fantastically inept primer delivery system, I couldn't be happier. I'll try it again in a month or so, but for now, I'm back to using my good old Lee hand primer, and life is good again. The cat's food and litter box is in the same utility room I use to reload in. I spilled so much powder while fighting with jams and non-seated primers I was afraid the cat and all would explode. I swept and vacuumed it all up and mopped. Anybody else had problems with this?