Steve:
I took a look at PO but nothing has changed in this regard.
You could use PrintBoss to make the PO document read the way it should.
Order 102 PC at the per piece price. On the PO document print out we could get PrintBoss to divide the per piece price by the MBF factor (which would have to be stored in an optional amount field). I don't think we have done this with 3 decimal place prices before so we would need to do some testing to make sure rounding doesn't become a problem.