If you decide to use 8125, Dynaflight '97, or 450+ I can help. 12 strands of 8125, use .025 or .026 and you may want to run the tag end of the serving the length of the serving for Classic nocks. 12 strands of Dyna, .025 or .026 for Classics. With 450+, 12 strands is overkill unless you have a monster draw weight. 8-10 strands for most bows, and also .025 or .026 serving for Classic nocks.
I'd have to look with Gold Tip nocks, but off the top of my head I think .021 fits best with the above.
Chad