Not really sure how to describe the problem, but I'll start with a bit of back-story. The bike is a 2002, top end was rebuilt along with new reeds and air filter. This rebuild took place last winter, the bike has sat since then due to a lot of life's little problems.
I fired it up earlier this spring and found it to be a bear to start. Once running, it was giving off light backfires, almost like one of the cylinders would cut out for a second and then kick back in with a little "pop", the strength of the noise seemed to be louder depending on how long the cylinder cut out for. I didn't have time to do much about it then, so it sat again until today.
Once again, it was tough to get it going, but eventually it started up and seemed to run well until it started its little routine again. I pulled the plugs, they seemed to be a little wet, maybe a little dark. Leads me to believe that it's probably a rich situation? I also noticed that it seems to be a little more problematic on the left cylinder, not sure if that means anything. Both plugs looked nearly identical.
Is it likely just a simple jetting issue? I'm not good with carbs, lol.