[mboessen]

Ah, yes. Mine has a couple of holes on the front of the tuning cap frame, which seem to place the lamp correctly. The only problem is that they don't quite line up. The wiring on the lamp socket is not original. From your picture, the lamp is not original either. This may have come from an earlier or later set.
Thanks for the help! Now that I have this info, I'll get it on there.