Hi Ken, the guide I'm talking about is the one that is prominently sticking out of the head and in which the chain runs. The bolt holding it in place is also holding the plastic balance on which the chain tighteners are anchored, but since the chain is fully enclosed by this guide I assume that the bottom of it is part of the engine block and remains there. Another thing you paid attention to that you placed a new O-ring on the pipe that exits the cooling pipe. What I see is a plastic? pipe that enters the head surrounded by a mounting flange with a screw hole but no clamp or anything. Is that right? Since that pipe eventually connects to a rubber hose do I disconnect at the juncture and then wiggle the pipe out of the head? Question, question, please don't give up on me. Have a good day, Hein

P.S. Another thing, the bolt I mentioned holding the balance Took me at least 2 hours to work it loose and in the process mangled the bolt with a vice-grip to such an extend to be useless. Would you know the part #?-thanks