Since getting mine back from dealer for unrelated work about 3 weeks ago, the idle bounces erratically when I release throttle pull clutch. Thought maybe my Grip Puppies were making throttle stick, but they weren't. It usually starts as high idle, around 2200 rpm, then drops too low, around 1200, before finally settling to normal 1500-ish. I've had it stall once when coasting to a stop.
The outside air temp has gotten quite a bit warmer. That's the only thing that has changed since dealer work, which only looked at brakes.