I'm got some new sheet metal to weld in and I have a miller 135 wire feed welder have been using .030 flux core wire I've been working on a test panel and have had to lower the amps to the lowest setting to keep it from burning through. is there a better way to do this ? I understand to only do spot weld and come back in fill in so not to warp the panel. any info on this skill would be helpful. thanks