2012 Vstrom 1000 Adventure with 38K miles. I just had a new chain and sprocket put on and went with 3 teeth more in rear. This is probably totally unrelated but just for information purposes. Have put 500 miles on it since. Seems like since the new stuff I hear low whining noise and figured it could be the new heavy duty chain. Now last week it got louder and could notice an increased vibration by just feeling the metal gas tank at highway speeds. Then when I got home and started looking at any possible cause I notice the side cases being so hot you couldn't even touch them. Much hotter than the cylinders or even exhaust. Any ideas before I either unload it for a new bike or bite the bullet and take in to a mechanic? Main bearing? transmission? clutch? (it does seem to be getting noisier with clutch out vs. holding it in at idle in the last year) I just worry that this is not going to be good or cheap to find out. I always figured the engine was bulletproof besides normal stuff. Thanks for any possible ideas.