hey, Noticed some oil on my fairings today and found that there is a crack, it's about 2.5cm in length. Not sure what the parts called but its the top half of engine casing where the spark plugs connect to. (any one know what the parts called?) I put in extra engine oil to make sure it doesn't run out. *anyone know what caused this? (overheating?) *is it a serious problem (pressure loss?) *and can i simply just patch it up?