OK, need some help. 05, 3500, DRW, NV5600, 5.9... I bought the Hoesli Diesel catch can and valve cover. How is it installed? Catch can has 3 hoses, 2 from valve cover, 1 for the drain/crankcase return. Are the valve cover vents/hoses, just open to the inside of cover? or do they need to be...