Hey, don't knock those KithenAid mixers. I have one of the Professional KithenAid mixers (you know how I am about my machines) I don't use it nearly as often as I do my Ryedale, but still.. it is a great machine. I have a De La Rue Mach 7 also.. it looks like some kind of space age battle droid.
If your percentages are low.. just sort more.
"Preserving REAL coinage.. 2 tons at a time... and FAKE coinage.. a quarter ton at a time.. just for speculation"