That’s the result after leaving it hanging upside-down while it cured to push all the drips to the top.
For comparison, the uncoated cap back in the day:
Seeing as how the urethane is an adhesive, not a coating, I’d say it looks about as bad as expected.
As with all 3D printed things, one must embrace imperfections and striations, rather than endlessly strive for perfection.
Now, if I had a resin printer …