I picked up a little bandsaw blade welder recently. It works fine and seems to make excellent welds. I'm having trouble aligning the blades, though. It seems that the backs of the blade holders aren't lined up correctly. I figure I don't have much to lose, and I'm considering just trying to line them up by running a hacksaw back there, figuring it will ride on the high spots. I considered removing and shimming the holders, but this isn't trivial and there isn't any information about it in the manual.