Hi, new to the forum and I would be very greatful for any help. I am setting up a portable rig with a Bobcat 250nt. I have a Spoolmatic 30a and WC-115A controller with contactor. So far so good. Now I also have the HF-251d-1 with NO contactor. My question: Is it possible to use the WC-115A controller w/contactor in series before the HF-251D-1 so I can TIG aluminum with the contactor from WC-115A? And if thats possible can I use the gas solenoid from the HF box (without removing it) for my Spoolmatic? With a quick disconnect hose fitting so I can just change from TIG to Spoolmatic. Any help would be great. Thanks.