Hello Jeff, I am no expert but I too have had the issue you speak of. The first time was around 33K miles. The plastic washers at the front of the injector assembly had worn out due to road grime. Even after cleaning them, they were too worn out to allow the throttle spring to pull the throttle back to idle. I was revving around 3K RPMs at idle. I had to replace the plastic bits from a cannibalized fuel manifold.
Flash forward to last year,
@warp9.9 was fiddling with my stepper motor and found the darn thing is worn out, Guess why? Road grime once more. He cleaned the area well and disconnected the plunger from the throttle block. That smoothed out the surging I was experiencing. I had to hold slight pressure at idle to keep the bike running.
I recommend using some WD40 or the like and clean the heck out of all the linkage at the front of the Fuel manifold. Take some stuff off to get in there good. Your bike is barely even used with that low mileage, so it may still be an easy fix with cleaning.