a) Dan's still around. Listen to Mad Dawg - he speaks wisely! Dan spec'd all the parts for my engine and I'm quite happy
b) I'm not sure I'm competant enough to set lash to a tolerance of 0.001" - so 0.023 may be just fine. You could perhaps search the Ford Motorsports webpage for lash, which would give the least margin for error, but if you aren't sure what cam you have then it won't help all that much either.
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