I want to settle once and for all if this adjustment is done hot like the fsm says or not. I have read somewhere that this is a typo, and I believe it for a few reasons: 1) it will cool off by the time I get it opened up. 2) it would seem that the spacing is to account for the metal expanding as it heats up, so the gap will grow as it cools. It would make more sense if this gap were to account for the engine warming up. 3) the Haynes manual doesn't say anything about doing it hot (normally I would defer to the fsm over the Haynes, but this case seems strange.) I just rebuilt my motor, adjusted valves both cold and warm, couldn't touch it while hot. It has been about 6000 miles so it is time for a valve lash adjust, and I want to do it right. Cold would seem to be easier and make more sense... Thanks for the input.