I just changed my MM250X over from .035 wire to .023 to weld sheetmetal. I changed the drive rolls, liner, and tips to .023. Sometimes it welds fine, but then it will pop and burn back. and the wire will stick to the tip causeing the wire to start backing up in the drive rolls. Then i have to re feed the gun just to have it happen again. I even tried useing a .035 tip and it still happens. Anyone had this problem?


Even when i ran the .035 wire sometimes it would pop and burn back but the wire was stiff enough to push it out the end of the gun. This thin wire just turns into tangled up ball where it comes out of the drive rolls