squeaking noise???

[pizmo 400ex]

after i ride for about 20 mins, i notice everytime i press the throttle there's a squeaking sound and if i let off the throttle it goes a way. so i went back to camp and put wd-40 on my chain and sprockects and it went away for a little while but then it was back. so i don't know if it has to do with then chain or what. any ideas?

[sprayedgt]

I have the same thing with my '08. I've tracked it down to the front fenders making noise with the mounts or the hood.