The roller in the machine has two grooves in it. it is probably on the larger one right now. Take out the phillips screw and flip it over so the wire rides in the smaller groove. You will need to get the correct .023-.025 tips ad having the .030 will make it want to arc to the tip instead of the metal and it will hang up and just be a total pain in the butt. Set it so the polarity is positive to the gun block and stat with a E 3 or F 4 setting on the dials.