If thats what it takes its okay. First though it would pay to find out the why it's so far out. Right along I have suspected an elongated chain but just as a possibility. Another couple of possibilities is someone accidently put the pump timing off and I consider that not likely but still possible. Of course also imagine the pump has worn and aged perhaps over the years or perhaps someone messed it up a little when timing the last time. The primary object is to get things back on track but again keeping an open mind. Unfortunatly other than changing oil and filters out a lot of my aquisitions have perhaps not had a serious tune up for perhaps twenty years. If they are running well with a smooth idle, decent power,start easily, fuel consumption is average I just leave them alone other than valve adjustments checked periodically and fuel filters occasionally as by and large our local fuel is pretty clean. Right now I am looking at a car on ebay and banging my head against the wall at the same time. I am old enough to know better. My self justification being that pretty shortly there may be no reasonable examples left of the 87 sdls except at prices I will not be able to afford or justify.At least it's totally rust free. The wife does not really mind other than wondering if I may land up with more cars than the mercedes company I imagine.