After working on my S, I went for a test ride down a quiet paved road. I was able to hoist 4th gear wheelies with no clutch. I was quite amazed. 14/47 gearing. While putting the bike away I noticed that I forgot to put the air cleaner side cover back on and my petcock was on prime. I put the cover back on and the gas to ON. No more 4th wheelies. Is there anyway to get that perfomance back? Is it just a matter of more fuel and air? Is this what a larger carb will do? My carb is a DJ stocker with 3x3 cut. Thanks for your help.