All right guys i got a question for anyone that can answer it.

What should i jet my "03" 650 at for riding in altitudes of 6000 feet to 10000 feet??
The dealer rejets the bike when you buy it, and i just wanna make sure i get the right jets for the altitude i will be rideing in.
I read somewhere on one of nyroc's posts that when he bought his 02 it was jetted at 138 front and 142 rear. But it didn't say the altitude he was rideing in. Oh one more thing the dealer said he could trade the stock tires on the 650 for new bear claws but i would have to pay 65.00 difference. Is this a good deal??

Stock tires 25-10-12 rear 25-8-12 front
bear claws 25-10-12 rear 25-8-12 front (no change in actual tire size just different brand name)