I've noticed that after riding at lower speeds and higher gears that my bike now runs a little rougher than before. Did I clog my plugs by doing this? Its a 06 600 rr with aprox 11,700 miles on it. Last oil change was about 500 miles ago. It also runs a little hot taking longer than usual to cool down once I get going on the road, could this be one of those situations where I need to burp the cooling system?