@ Brian -- the 1C didn't have a belt lifter. The cap simply provides access in order to lift the belt onto the pulley. Kirby didn't introduce the "magic finger" (belt lifter) until the 505. In fact, the early 505s did not have a belt lifter. It was a late production item with the 505.
@ Derek, I would paint the handle. But that's me. My goal is always to make it look as new as possible. But no matter what you do, it will still look amazing. I know you're really proud!