We have the Lee Classic Turret Press, which comes with a 4 hole Turret.
Did you payup and get the Pro Powder setup? If so, ours came (from Kempf Gun Shop) ready to screw in the charging die and go. Although, for whatever reason there was a small bag, with another "handle" and chain. I didn't think it was needed, and we have loaded many with no problems.
With the Lee setup and dies, if you also bought the Safety Primer setup
(which is really cool), then you need to get a "riser" that first goes into your charge die so it clears the primer gizzmo as it turns.
I guess you can use the RCBS dies, did you already have them, or just prefer them over the Lee products?