[Closed] Kore dropper!!

After just one ride, it's more likely to be cable related than dirt etc in the internals. Check the cable inner isn't too slack, or hasn't pulled through it's clamping screw, and that you haven't kinked the outer and jammed it all up by pushing the post down into the frame without pulling the excess through at the front at the same time. Other things to look for are damaged/sticky bushings inside, but after one ride, i'd be considering leaving that to the vendor as a warranty issue.

Have you made sure the seat post clamp isn't done up too tight?

FWIW the Kore dropper on my Clockwork is pretty stiff but it has loosened up a bit over time.