This is the second time my oil cap blew. It happens when I am rolling in 1st and then jump on it. Before I can hit 4th. gear about a 1/2 quart of oil along with the cap are gone. WHAT A MESS! It happens when I top off the oil to the full mark on the dip stick or slighty just below the mark when the engine is warm. Yes I know that I should just run the scoot with less oil but somehow that just doesn't seem right. I guess it is better than blowing gaskets or seals. Do these caps need replacement or do I have too much oil and generate too much pressure? This last occurance happened 45 miles into my ride.