These are the parts to fix the fsb sight post with a set screw from below.
All you need to add is a cut down hex key 5/64 in.
I found a source and then I bought too much.
I have qty 4 8-36 taps with double flutes.
I also have 90 8-36 cup point hex head set screws 3/8 in long.
I would like $40 + $5 shipping and handling for all.
Please email or IM for payment details.
Thanks for looking.