Anyone have a good diagram on how to assemble all the headlight parts?

 

This may help. Alignment is done by adjusting the screws in the bulb retaining ring.

 

check out mid-fifty catalog page 54. The bucket includes a ring in the bucket, 2 springs, 2 adjustment screws, nuts and keepers. I had to replace a couple of adjusting nuts and keepers. IIRC I hooked up the springs and then rotated the ring to engage the adjustment screws.