I'll be watching this! I too use larger strings (the Jack Howard string) and I don't like the Easton uni-nocks on it. Sure there are lots of ways to stretch a nock (hot water, whittling it etc) but I don't like it.
ALTERNATIVELY (If you don't mind another question) - DOES ANYONE KNOW OF a nock adaptor to fit into the uni-nock hole that would allow use of a regular glue-on nock. IF there were such a thing I'd pull all the uni-nocks and throw them as far as I can - then glue on the good "old fashined" snap-ons.
Ryan