what is hitting what? is the axle still too large for the slots in each trackend? or will the hub not fit between the two trackends?

i think in order to offer suggestions, we're going to need more information.

and while i do urge you to be cautious and get good information on what to do before filing anything, i'd disgree with the poster who fearmongeringly warned that you could irreparable damage a hub. axles are completely replacable. you're not doing anything to the bearings or hub body.

but yes, don't jump into anything.