I got a quote of an American store for some Fox riding gear and it was real cheap!! I got onto Scott at Suttos and sent him my emailed quote from the States, he came back to me with a price close enough for me to not bother buying from the States, glad to Keep my money in Australia this time.
If the jetting is to lean the bike will run hot.
But i would check the other things out fist like the cap, thermostat, blockages and run a good coolant like Engine ice or liquid intelligence.
It comes down to maintenance, If you look after it, it will look after you, i had an 03 450 from new and did well over 100,xxxkm and it never replaced anything in the motor except oil, filters, plugs.
Dan from here gave it a go on the weekend and said you need to be able to hold your leg there, Balance, Throttle control and turn into it just enough, Alot harder than it looks.
If your wondering where you would use such a skill.. Here it is
[video]http://www.youtube.com/watch?v=ZGKtFrRsEGU[/video]