I have been Pc'ing for several years now using the ESPC sytem and also had great results. For some reason today the powder would not adhere to the boolits. tried a new bottle of powder and it stiil had lots of lead showing after the pc. Tried a cast iron bottle opener I was wanting to Pc and it worked good. I did clean off the boolits good with acetone so I am sure they were not contaminated.What goes..... any ideas.