Hey MJ - the handling in the booklet is specifically for pristine coins. I had the same problem when I had the first set. The stack needs to be made from new coins or it becomes phenomenally expensive to make. Imagine the same set for DOUBLE the money!
So, for example, when I steal back two coins as I pretend to place them in the left hand then open the left hand to show the two already there - THAT'S when I move the right hand coins to finger palm - the opening of the left hand causes the left coins to make noise, so covering any noise from the right hand.
Also the way I do the last coin (the slo-mo then the look up as I quietly slide the last coin onto the palmed stack) is designed to cover the new coins.
Hope this makes sense. If you ever run into me at a convention, we'll sit down and I can show you the sequence personally.