So I recently noticed my bike started running rough between 2 and 3k I changed my fuel cap back to stock thinking it was vapor locked but it wasn't... only seems to do it after it warms up. I'm not sure if a vacuum line and off but it runs great after 3k. Even sometimes it idles a little different sometimes. It started do it on my way home from a trip after I filled my tank up and seen some gas coming from the top of fuel tank. Keep in mind that was an aftermarket tank cap. I since then changed it back to stock