I just bought(has not arrived yet) a bastardized waterman's crusader from a fellow FPNer(lahlahlaw) with a blow-fill hero 616 barrel. I was thinking while it is pretty awesome, making it a coin-filler and blow filler would make it even cooler. As far as i know all i need to do is put a j/pressure-bar to put in the barrel and to cut the slit, how do i find the bar, and is it economical/practical to do this? This is the pen(courtesy lahlahlaw)