Not as easy to go 3/8 on a 346 though is it?? I've never looked into it, only skimmed by the random thread on that subject on AS a time or two... Easiest thing would be for us to run to Kahlers saturday morning, then we can all get a new chain and he can get a .325 rim and run the bar off his 550. No doinkin' around swapping chains back and forth and worrying about who gets to make the first cuts and all that other hair splitting sillyness. New chain on each, 3 cuts in 10", three cuts in 18", done.