I have a 03 racer that I put a 700 twin in it. It has vforce reeds a crankshop pipe and silencer. I also had crankshop program my stock 440 cdi for the 700. It has the stock 40 mm rack carbs on it. The main is 520 pilot 17.5 and a J8-9zly3-58 needle. The problem is It won't idle good and has no low end. But if you flip the choke on it will run alittle better not great but better. On the top end it goes like crazy. I bunp the pilot up to 25 and the main to 560 and it didn't help. Also went down to a 15 pilot and also no change. And again flip the choke on and runs better rode 90 mies with the choke on and it didn't blow up but was a chore to ride. The jetting for a 800ho rev is different it has a 400 main and a 17.5 pilot with a j8-9dhI 13-58. Just wondering if anybody else did this or if someone had any solutions or advise. Any info would be helpful thanks.