So I decided to rejet my Vulcan 500 because I have shorty mufflers on. As a result I went with a stage 3 jet kit from carbjetkit.com. I have a K&N air filer in my Vulcan. Long story story, I rejetted the carbs, added a very small washer on to each needle of the carbs, and went for a ride. Smooth sailing when all of the sudden my engine starts to spudder. It jeeps doing this and eventually the engine dies and I am stuck on the road. I went to look, and my carb headers were loose so I screwed them in. Didn't fix the problem. Does anyone know what's wrong and how to fix this problem??