just finishing up my 0900am break..I use .035 wire for just about everything..take a look over at millerwelds.com they have a forum..probably some people over there using a 255 as well with some setting suggestions..I sure miss the digital readout for MIG voltage,this old CP250 I'm using has quite the vague slide indicator for voltage..not too precise..but for me the old skewl machines get the job done