[JerryL]

What size wire are you using?? I like .023" tends to have less burn through and wets out better on the gauge of metal we are working with. You may have to buy an additional drive roller or flip one around to use the flat insted of the groove on one side depending on the make of the machine.
And as one of the guys in the shop says trying to teach new guys, " if it dont sound like frying bacon on high, it aint right"!!

Keep up the good work

Regards