I don't use the folded clevis either, it will help out a lot if you use 2 beads for an easier spin and blade clearance. I use 2 beads on all my spinners.
had some luck on ebay from china
https://www.ebay.com/itm/100pcs-size-2-0-6-6-7-4-6mm-Stainless-steel-oval-split-rings-Crafts-Lures/232109397335?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
aluminum foil works pretty good, for me learning curve was and is on going! the only problem with aluminum foil is the paint does not stick well and is easily removed.
best way to cut lexan or polycarbonate is with a carbide saw or router Imo, yes you can cut it with just about any saw but leaves more work for clean up....use a torch on the edges to make them look great
I have been using a fluid bed for primary color then tapping second color with a brush but I was thinking of a sifter (like flour) it did not work screen was to large.....went to the store and bought some regular fiber screen and worked fine (with some work) then a friend (Azfisher) put me on to paint screen....without a doubt works awesome with just a light tap and I can contain the drifting paint easily.
there are so many uses for those feathers imo..... teal are small and don't provide a lot of feathers if plucked, also remember that duck feathers will repel water.