Try this question over on the bowyer’s forum, BC. I’ve made several dozen self-nocked arrows and just use the edge of a piece of paper or somesuch to wipe out the worst of the dip, so that when dry it doesn’t completely fill the slot. Then I carefull open the nock back up to the width I want with a think file. I actually prefer this, since it provides a better fit to the string. Another possibility is to not dip the nock but use a spray finish. dave