Need help troubleshooting

I have two different issues. The first one is I think pretty simple. I increased the jet and metering rods on my carb and have been getting a popping sound through the exhaust. My thought is unburnt fuel.

The second one just started today. Clicking sound from the end, turning the wheels to the right, and stopping hard will produce the sound. The full front-end was rebuilt about a year ago, K-member up rebuild. Any ideas?
old timers say,..if it poping out carb its the timing,if its poping out exhaust,...its the carb...

what kind of brakes you running?? could be cracked rotor clicking the pad,..could be a wheel barring bumming out...get the jack an stands an check it out,..shouldn't be hard to find...good luck...