93, de-paired, 30k miles. Bike runs okay. It's run better in the past. When I'm riding I can feel little bursts of power when I'm at constant speed. This popping was happening extra bad today so I thought I'd video what's going on. It sat for about a month this winter and was very grumpy when idling cold. That's better now that the weather has warmed up. Doesn't seem to bog down any when revving. Does this sound like a carb or valve issue?