I'm glad that you folks are enjoying your Victor regulators.
mrmotorcycles (Victor) sent me a Matheson model number 8-320 dual stage CO2 regulator to try. It is not as nice and shiny as the Victor regulators, but is a very nice regulator too.
MRMOTORCYCLES@VERIZON.NET is his normal email address. You should use this email address for the Matheson regulators and not his eBay address because he is not selling them on eBay at the moment.