Recently the Bike became hard to start once running it was OK then it began to bog slightly on staring from stop turns out the plugs were fowled because the breather tube had moisture in it from cold riding. I cleaned the air box and replaced the Plugs it ran good but today it bogged slightly in second gear and it wouldn't start with the kick start it did start with the starter button. Could the carbs be running too rich it does smell a little gassy when running