Gilera Runner VXR 200 - 07 Buzzing noise at the front end??

Hi All,

I have a noise coming from the front end of my runner and i'm wondering if some body could point me in the right direction?

The noise is coming from the front end and it sounds like a buzzing or light grinding, it seems to happen randomly when driving the bike and only lasts for a thew second at a time. I was thinking it might be the water reservoir or a relay?

Also my heat gage doesn't seem to work, it just flashes a bar above the hot and a bar above the cold end of the gage. could this be a faulty heat sensor?

Any input would be much appreciated.

Many thanks