Ok i tried several attempts to record the sound, but the exhaust note drowns out any and all hissing sound. I asked several mechanics about it and the dealers of this bike say its normal while a few private mechanics say cam bearings or cam related which makes sense to me since the sound does seem to be dominant up at the top of the head. Also from what i mentioned in post #3 above sometimes when i lean the bike from side to side the sound changes in tone as if oil is supressing it. This seems to relate to what the private mechanics are saying. Im wondering now if its cam bearings about to go poof?

 

Without hearing your bike or the sound I can't be sure, I think you are looking for trouble.

David