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Hi hay, If there's too little tension on the roll of wire, particularly with one of the larger sized rolls, momentum can cause the roll to push more wire forward when you let go of the trigger. (Too much tension can make the wire stutter as you're welding.) You set the tension by loosening the tensioner until the roll keeps turning when you let go of the trigger, then tighten gradually until it just stops---don't tighten beyond that. I'm not as sure of the test for setting the pressure of the wire feed rollers. I think you put the palm of your hand in front of the tip, run wire against it, and set the pressure of the feed rollers to the least amount that will push the wire past the resistance of your hand. I'd be more comfortble if Dave, 135 Fan, would confirm that procedure. Something you can do to reduce the problem of dirty wire clogging the liner with debris is to add a wire cleaner just before the feed rollers. These are sold at welding shops or online, but actually they're not necessarily more complicated than a pinch clamp type paper clip holding a piece of slightly abrasive fabric that the wire has to pass through. I've never seen one in action, though, only in videos. When you get the problem solved, let us know what it turned out to be. That information can be valuable to other wire feed welder owners---particularly those who own Century 80 welders running .030 flux core. All the best, Stan
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