The AVP web site <http://www.avp-worldwide.com/heads.htm> says that
all WBX heads are rebuilt with new parts (except intake valves) and
then "step-cut" to allow lower quality fuel.

What, exactly, is step-cutting? I presume that this lowers
compression. I've never read about anyone having this done when
getting their heads repaired. It this really necessary?

Thanks,
Dave
--
Dave Carpenter

Whatever you wish for me,
May you have twice as much.

"Sometimes I think we're alone in the universe, and sometimes I think
we're not. In either case the idea is quite staggering." -- Arthur C.
Clark