I bought the ($51.95) Dyno Jet Carb Kit featured on the Baja Designs website from my local Honda Dealer. I wanted them to jet the carb for me because I didn't feel comfortable drilling holes in it for the jets or what-what-not. I also had them put on the Cobra Exhaust for me. (now here comes the stress!!!!) They dealer called me when they had the bike done. However they said they broke my air-mixture screw on my carb. !!! They said they didn't get a chance to dial it in, but they said the bike is drivable. I fired it up and loved the exhaust sound. I took it for a test-drive and I thought I would never reach 55mph! The bike was drowning big time, not to mention spit'in and sputering. The bike idled fine and I could crack the throttle in neutral and it sounded somewhat normal. However, when you go to cruise it down the road the bike wants to die when you go to give it some juice. I took the bike back and told the mechanic that the bike was drowning and he gave the the tools neccessary to drill the rivets out and remove the snorkle. I took it for another run and the power was somewhat decent 70-75mph. The power was not too awful bad between low and low mid range RPM, but I have no top end what so ever. The bike, before mods, had an awesome first gear power-wheelie. Now my power wheelie is about 2inches, which will not get the job done. I have a foam air filter that is pretty decent in size. I was wondering if that stupid air-mixture srew is causing me all these problems. The part should be in on Monday, and the dealer said they needed to drill the other out, tap it, and put the new in. The stock jets on the bike were size 150. The instruction sheet said to install the 165 jets if you run an aftermarket exhaust, and use the 160 jets if you run the stock exhaust. The instructions also had a note stating that no mods to the airbox are required. The dealer installed the 165's. He also mentioned someithing about the needle setting. The instruction book wanted the needle placed 3 down from the top (no idea what that means). I am not sure what is causing me all this grief. Would someone please give me some helpful intuition on this sore subject. The dealer doesn't have any advise, they ran out of ideas except for the mixture srew not being set, but they said that won't make that much difference. My XR is running like crap, and I paid too much money to just accept it. Please Help!