Mainer, You haven't expanded the case too much, until it won't fit into the seating die. I try to expand the case as little as possible to get extra loadings before the brass "work hardens", and case mouths begin to split. The Lee sizer kit you describe is what I have used for the last 12 years. I suppose they are not pleasing to everyone, but I like mine. They are three or four times faster than a lubersizer, and no mess. You need one for every caliber, but at the time I bought mine, they were less than 1/2 the cost of a sizer die, top punch, and bottom punch for a lubersizer. To apply the liquid allox lube is simple and easy. I put 100 or so bullets in the tall round baby wipes container (coffee or fruit juice can, ice cream pail, etc., would work too), squeeze a couple of teaspoons of lube around on top of them, then shake the can around for a minute or so. If there is not enough lube to suit you, squeeze on a little more until you have a coat that covers the bullets, but not so much that it will drain off and puddle in the bottom of the container. I just leave them in the same container until they are dry enough to handle without getting sticky hands. Depending on temperature and humidity, this can be from overnight to 3 or 4 days. I have found that putting a small amount of lube on, and letting dry overnight before sizing, makes them slip through the sizing die a lot easier. Then put more lube on after sizing. The lube coats the entire bullet, but is no problem in the box. However, I think it might pick up grit in a cartridge belt or speed loader, so when I carry them that way, I use a cotton rag with mineral spirits to wipe the exposed portion of the bullet clean after loading.