Hi, new to forums,I hope some one can help. I purchased a Fronius 1400 tig machine, with out gun or earth leads, I was led to believe it work perfectly, but I cannot see how the gas is supplied to and into the machine. i have not used a tig for many years but I thought the gas fed into the back and came out through the gun. could you also advise the best place to get the gun and leads for this machine.