It's possible that your tach is accurate, and your idle has increased to 3000 RPM.
This is what happens when the bike gets good and hot, in the nice spring weather
(compared to coupla months ago).
Simply use the adjuster, and maintain idle at ~1200 RPM.
If any doubts, any Kawi shop can test your tach quick & easy, it's pretty straightforward.
Regards
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