I tried to order the yz needle from my dealer they said its on backorder and wont even ship til the end of the month. I was hoping to do all my mods before then. Will be ok doing the airbox lid, yz timing and white bros E series with the wr needle. I am worried about being too lean with the air box lid off right now I have a 165 main, 42 pilot, middle clip on stock needle, DRR. they gave me a 38 pilot, and 160 and 170 mains. I ride in northern california about 300 ft above sea level. Any ideas on which jets I should be using for this setup. I want a safe baseline to start from and then Ill mess with it from there.