First off why does miller make the xmt 350 with two different size female dinse connectors? I believe 1/2 and 3/8 are the two sizes. I would like to change these out to a tweco style twistlock, don't care to use the dinse to tweco adapters anymore. I beleive they are made but cannot find them. Anyone know if these exist and where to purchase? I found a part number some one gave a few years ago on the Hobart board but cannot find any info #209 219