[Harp-L] Not Stuck, But Balky

On both my chromatic harps, after 20-30 minutes of playing, the slide seems like it goes over a sort of "speed bump" when I release it. Not a burr, but more like the spring tension itself suddenly gets tighter before it opens all the way. When I keep playing, it makes an "almost click" sort of sound when it releases. Is this a common symptom with a straightforward fix? The harps play fine otherwise, but it's distracting.

I've been rinsing with water after each practice session, and propping the slide half-open to let everything air out. Anything else I should try?

Thanks in advance,

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