Hello! I've finaly gotten around to repowering my old HO scale Bachmann E-60CP (which is finaly looseing out....) and i cut the tank off the plastic chassis of the E-60CP. the plan is to get the metal chassis of an athearn C44-9 to fit in the tank. While it mostly already fits (except for this peg in the E-60's tank that i can't seem to get at, but there are probably clippers for it) the sides of the Metal chassis of the C44-9 are way to wide. I was curious if anyone whoul have any idea how i would get rid of the all that metal. its not alot, but its enough that if i had a regular hand file, it'd take forever. are there and tools or anything i can use to wear the metal to the right size to fit? thanks.