galled left rear axle spindle. repair? replace? buy used or aftermarket?

[hueyhoolihan]

i've known for a while that my left rear axle spindle was damaged sometime in the past from what was probably an overheated bearing. it has been galled and someone had wrapped it with a conical, thin, metal shim of some sort that's often included in a rebuild kit. i want it fixed properly.

any ideas? finding a used one could be difficult...
can i buy some sort of new aftermarket rear axle that could be installed as a replacement?
how about a machine shop removing the spindle and grafting on a new one? i'm up for just about any kind of idea. i won't judge... promise!