We have folks working on that right now, pretty sure its not a matter of "if" it can be tweaked but just "how"
As I understand it, the con IS salable, and indeed we were selling it, and will sell the 100 tons they still have. The problem was (or one problem was) that we should have been getting more out of the ore that was being fed through the mill. They were feeding some 2% ore, yet only recovering as much as you would expect from 1% ore is as about as simply as I can state it. Does that make sense?