As the title says I am in need of some gas. I am in the Raleigh/Durham area and am switching my kegerator over to a nitrogen system primarily for dispensing Guinness. I of course am looking for the 75% N / 25% CO2 Guinness gas. I've called a few places and the places I talked to either don't do personal tanks (industrial/restaurant sized), or they don't do the blend. Has anyone else had any luck or have any advice?