R1 cam chain tension

I know F**K all about engines and how they work but the time has come when my bike with 17,000 miles is making some noises.

I have been told by (Experts) other riders, that it could be my cam chain tensioner, and if I change that, then I should get the head skimmed, and the valves and stem seals done.

what the F**k are they on about ?????

Is it worth it ? who should I go to ?

the bike is a 2000 model with Ram air, hindle full system and a few bolt on's, dyno tested at 160 bhp at the rear wheel with 90psi torque. basically its a bloody fast toy and I'm off to europe on a road trip next year. I'd like to see what extra power, if any I can find, so what should I do about stripping and re-building the engine ??

any suggestions ??

Cheers

Damo ( Redhil, Surrey. )