My do and don't with Kayfun (3.1, Kayfun lite, Russian 91%):
- Cotton is great for Kayfun IMO.
- Use at least 30% PG blends
- Don't cover the liquid channels, unlike Fogger/Orchid you can keep them "unwicked" and keep your wick on the deck.
- Don't stuff your coils with wicking, you should keep it airy/fluffy.
- Don't go under 0.8ohm with Kayfuns (I build them 1.2-1.4), they have tight air and liquid flow, more than ~15-20W probably going to dry the wick before it can get soaked again.