Video of my idler gear wobble. Not sure if something like this has ever been posted. When I tried to start my bike last weekend to go for a quick ride to the store, I heard a 'crunch' and then the kick starter locked up. Knowing what problems it can cause, I stopped, put the bike back up on the center stand and knew I needed to take the thing apart. I looked thru the gap b/t the clutch and case about 5 months ago and assumed all was ok due to my gear not having any chipped off teeth, but consider this a fair warning that even if your teeth on your gear are fine, doesn't mean the bushing on the gear doesn't have enough wobble to wreck potential havoc. Be careful when you are sliding the gear off the shaft, there is a washer in front and a washer behind the gear. My rear washer fell down into the engine pan, but it was easy to get out with a pair of pliers. Needed to change the oil anyway... Hope this provides folks some insight to change it no matter what.