Hi chicane,
I dont hear any more whistle noises!!!!! Yesterday I decided to do an engine flush, change the oil and oil filter, while is was doing that I thought i'd clean the air flow meter and filter.
Even though I had changed the oil about 3,000k's ago I think the oil was too thick therefore being harder to mover around the engine when cold, I also noticed the engine note sounding abit more crisp
Chicane let me know how ur prob turns out, Im still a lil supsicious about the belts and I'll probably get them changed soon.
Take it easy