[QUOTE] I've just been out and checked the measurements I took earlier. *All* of the exhaust valves are way out of spec (gap too small). Inlets are OK, except for No 1, which is too small (by about 0.05mm). No 1 is not the one with the cam problem. Now, it's been about 20,000 miles since they were last checked[1] (I know, I know...) but it's surprising me a bit that all of the exhaust valves are so far out. Any theories on why, or is this just "one of those things"?[/QUOTE] Well, 20k is a long gap. And with shimmed cams, the gap does usually close up, cos most of the wear is on the valve seat. So, I'd say it's one of those expected things.