Ive got a cst 280 with a wp26v torch setup and foot 14pin foot control. It works great for tig, but I see that there is a plug in the front of the welder that looks as though I could install the fitting and possilbly the solenoid for gas control. Anyone have any information on this, or now where to find it. I looked on the site and dont see any info or prices for the solenoid and what not. I would like the gas to work in conjuction with the foot control to save gas. any input would be very helpful. thanks