Also, there are lots of KB stls out there. OP printed this one, and thought it was good enough to share (and I agree). So, it’s useful to know which particular one they used. And, if it’s not their stl, then linking is a way of giving credit to the stl author too. One more point: any issues or adjustments they made, for that particular stl, are useful to know (like they posted below, finally).
I see the OP did update with the stl below. But I wanted to post here to say it’s just good manners to add a reference for the specific stl of a print that was good enough to share.
I had the same realization. I spent 3-4 hours fiddling with different settings, with no impact, and then 1 hour drying did the trick!!