Well I finally got to put some good miles on the car this weekend. I do have an issue, it only happens once I get over 2,000rpms, I get a pop out of the exhaust. Would it be the timing is out? I did move it maybe a degree both ways and it didn't help the issue. Or maybe the carb is going bad? I know of a guy that had an issue with popping through the carb last year, adjusted the timing like crazy didn't help. he got a new carb and it fixed the issue. any ideas?