David, your stencil material arrived yesterday, and I will do a test cutting with it as soon as my new pinch rollers arrive. They are expected around this time next week. Certainly an interesting material. Very keen to cut holes in it!
After looking into a number of options, my king pin kit (81T-3111) has been ordered. I broke my own rule, it's NOS. I did ask a lot of questions about condition before buying, so fingers crossed. Total cost = $95 including the postage. The muck you see on the pins is preservative, not rust.
Hopefully I won't have any problems with the kit, but even if I don't like the condition of bearing/s or felt seal/s, it is cheaper for me to purchase a pair of them new afterwards, as opposed to buying entirely new set from somewhere like Macs! Theirs are ~$90 + postage of $45. Ouch! All prices are in USD. New thrust bearings are $4.95ea. New felt seals are $0.95c each.