It doesn't seem logical, but one of my head bolts is smooth, has something in the head, appears too smooth to be a broken bit-tip, but I guess it could be.

Going to have to grind it out, definately hardened steel. Is there any way of grabbing the outside of the head bolt on a 603? It is beneath the cam tower, so no easy way to grind it, ... any suggestions welcome. Drill bits for "hardened steel" haven't made a divot and my center-punch just flattened (really hard too, made from a carbide spot-face bit).

Maybe a carbide drill?

__________________

Gone to the dark side

- Jeff