Mike
can you post a picture of the part to be adjusted
do you have a good bicycle shop around? for road racing bikes. Scanton or WB?
When I rode and maintained my own bikes I had a couple sizes of pin spanners in my tool kit
like this
https://www.amazon.com/Park-Tool-SPA...331894&sr=8-11
just wondered if that will work for your pins fitting
they may still be sitting around someplace