OK, in case you didn't know already, I need a TIG torch for my super 200p. I would like to get one of the everlast wp-26's but I am not sure what the difference is between the 7 and 2 pin set up. What would I need to do to make one of these newer torches work on my older machine? I only want a wp-26, don't really care if a newer 17 will work, I want a 26Coop