If it ain’t 100 consider it 0.

It’s 25% per hit so there’s still a 75% chance you’ll get nq each times. Just keep using skills, refresh with cordials if gathering. Skills like deep vigor grant 100% hq after chain 4. So extra hit nodes are good for that combined with qty increase you could get a guaranteed 3 from that for 100gp from a +2 hit node.

But rng will rng. Today I had a node 35% hq (with a 10 buff skill) I got all 4 hits hq. Next node had +60 hq. Only 1 hit of the 4 dropped hq. Lol