I have developed quite a serious oil leak from my Comet, intermittent drip about one every 30 minutes increasing to a drip a second when the engines running on tick over - it looks like it is coming from the area around or above the drive sprocket, initially I thought it was the chain oiler was open the full way but this is 1/2 turn open. If the breather is at fault could someone please suggest a fix and how to accomplish this......I have read that taking the breather pinion anti clockwise by two teeth at BDC alleviates the problem but don't know if this is just a twin fix or is this the same for the single. Could it be another problem?.....anyone have any ideas?