Hi, this is my first post here and was wondering if anyone could help, I have a Draper turbo 180 at mig welder, about 5 years old, digi display etc that has developed a fault. When I press the trigger the wire wont feed constantly, it feeds in systematic bursts of about 1 second, sometimes it feeds for longer about 5 seconds then stops unless I press the trigger again. I have replaced the contact breakers (1 had burnt out) hoping this would cure it, I have tried it on all amp, feed, etc settings which make no difference. Any help would be much appreciated. Thanks