So, I picked up a VTS 250 A on eBay the other day, and relegated the MicroMatic to 'backup' status. I changed the nipple and nut on the vts250 to CGA-320 for the CO2 tank. Now, here's the question I have: I'll set the low pressure to 5 psi, and adjust the Ideal needle valve to give me 2-3 bps...