I just purchased an astro power mig 130 and it didn't come with a manual. I can't get .030 wire to feed,any info would be awesome. It doesn't look like you can change drive rollers it's a big cylinder with only one groove in it. It feeds the .023 wire just fine but when you change spools it strains the machine. I can't find any info on these machines online anyplace and again any info at this point would be great!