I have just purchased a new non vented aluminum alloy valve cover. Does anyone have an ingenious method of providing venting from the carbon cannister. One of our club members drilled a hole in the back of the cover and then installed a nut and bolt with the bolt head inside the cover. The bolt had been drilled out through its length with the 5/64" hole and then the hose attached to the end of the bolt. I was worried that this method might allow oil spray to be drawn through this tiny hole back to the carbon cannister. Any comments on this method or ideas?