So when I got my bike 5 days ago it sounded like this: https://www.instagram.com/p/BIu-Wg8BoQ9/?taken-by=j.jeffrey.wilde Left it at the mechanic to get a few things done like swapping handlebars. When he gave me the bike back he said it was "running rich" and adjusted the screws right in front of me. Now the damn thing is backfiring all over the place. It sounds like fireworks when I ride and I pissed because, as you can see from the link above, the bike was running good. Ugh. Do I just adjust the mixture via the screws to remedy this, or must more be done. Also, I should note, there is no baffler in the exhaust header, if that makes sense. The shop manual is on the way to me in the mail. If I had it maybe I could figure this out.