I take whatever Kobold gives me for extremely deadly and then multiply the difficulty by about three to actually have a difficult battle.
Yup, always go higher than the book says, especially with a high-level party. Tier 4 PCs have so much stuff they can do it’s really hard to challenge them, so you gotta get nuts.
Well, there’s a 1st level spell that triples jump distance, so I figured it’d be fair. I could just make it double I suppose.