The bike runs fine until it heats up and then the problems begin. After heating up the bike will still idle with the occasional miss (once a minute) but doesn't stop the bike. When riding the bike it accelerates fine if using 75% to full throttle but using 20%-70% throttle the bike starts missing a popping both on acceleration and when crusing. This just started happening this last week. We went ridding for 5 days and days 1-3 it ran great then I woke up to ride the 4th day and this started happening. I took out the carb and completely cleaned it jets and all. Also, it seems to be making a slightly more valve noise (clicking) than normal. Thanks in advance.