I have a Clarke 100E mk2 mig welder. I burnt a hole in my gas line and can't find any place to buy parts for this welder. I would like to replace the liner at the same time, so i could increase the length. It now is only about 5 foot, so i would like to replace gas line and liner and make it longer. Thanks for any help, i am new here and i'm sure this has been covered before and i will continue to look.