On inspection of my Engine block ( OM617) after having come back from the engineers I see the one dowel pin between head and block was bent over at about 5 deg. This resulted in the hole for the pin being slightly elongated and this in fact has made the adjacent cylinder out of round - the metal having pushed its way towards the cylinder. Took this back to engineers who are considering making the top of the cylinder true again . What I am concerned about is the metal fatigue / weakening of the block that may have resulted - also I'm sure the block must be slightly distorted - will you ever be able to put another sleeve in there ? Has anyone ever remachine the core block on a Om 61x engine?? Peter