I took the plunge and ordered a Thumler Model B tumbler (15 lbs capacity). I'm looking for some advice. 1) How much (weight) stainless steel pins do i need? or, is it "proportional" (ex: 60 % pins vs. 40% brass by weight, etc). 2) Which size pins are best? 3) How "full" should the drum be (with water) if it's a small batch? Or, put another way, what is the "consistency" of the brass/pins mixture.....lots of water or just enough to make the batch wet or somewhere in the middle? Finally, what questions (along with your answers) did I forget to ask? Thanks.