Okay guys. Bought a grizzly 600. Ran like shit but ran better with the choke on. Figured it was a fuel issue. I bought a new carb on eBay from Zoom Zoom parts. Put the carburetor on, and it ran better but still popped and coughed through the carb. So I decided to rejet it because I have an aftermarket exhaust. Put a dynojet kit in the carb and didn’t fix anything. In fact. Almost made it worse. The quad started backfiring through the carb, popping out the exhaust and ran really rough. Will cough at idle and sometimes will run decent when driving about, then randomly start popping and coughing through the carb and exhaust. So then I decided to go back to the original jet. And nothing changed. Still runs like crap and I’m getting really frustrated. Any suggestions to get this running right? At this point im getting ready to purchase a factory carb off of a grizzly being parted out nearby, totally rebuilding it, and installing the dynojet needle and jet on that carburetor. Is there any possibility this isn’t carb related? I’m lost here and open to any suggestions!