Thanks so much guys.
Stony, well, I DID make a new shoulder stud thing, with a 10-32 retaining screw just as you drew. My original shoulder stud thing was rusted so bad that half of it was missing. Oddly enough the machine screw came out fine during disassembly.
By the way, I noticed the little machine screw is a PHILIPS screw just like yours hawk.
Anyway, I made a new shoulder bolt/stud out of brass (scavanged plumbing fitting), but I haven't made the spring. You can see remnants of the original spring in my picture...
One thing I also wasn't sure of is where the half loop is supposed to be...mine seemed to be bent out so the loop was angled toward the rear. I bent it back so it was more straight up and down (with the windshield up).
Soooo, I will try to make a spring. I grabbed a girls bike from the dump the other day for spokes, but dangit, 5 minutes of tweaking and tuning the shifter and brakes, then pumping up the tires revealed it was a perfect little 5 speed bike...now I feel like I should put it out on the corner with a "free" sign...someone could surely use it. Maybe one missing spoke won't make it a dealbreaker...haha.