I bought a Kaw LTD550. It´s a 1981 with 5600 miles on it. I bought it to get my license back.(been 20 years) Also for the wife to learn how to ride. It runs great but it leaks gas when sitting, The carbs fill up and floods it. No matter the position of the tank valve!!! Any ideas how to stop this? The gas leaks out the small ports at bottom of carbs. Once it starts, no problem. Start easy then. But after it sits a few hours, then a problem...Help!!!