Could someone explain to me how the zero lash could give more power (lift?)
than the stock adjustment setting?  If the lifters are adjusted by the book
and they are closing (good compression), how could less pre-load help?  I
am running new lifters and the engine runs good.  Mileage is good.  It does
seem to run better at 60mph, than start and stop in terms of power.  It
doesn't seem to pull smoothly going up through the gears.  Low end power
seems low.  Cold starts are stumbly for a few minutes, but it idles fine
once warm.  Could the lack of cold idle be related to the valve adjustment
(low vacuum)?  I have checked the aux. air valve.  This is an '85  1.9l
digijet.
I adjusted the valves after I put in the lifters.  I don't recall how much
preload I used, but I am sure it is less than 2 turns.  Is it worth going
back over them and trying zero lash or 1/2 turn preload?  I hate to fool
with it if "it ain't broke."  Is the zero lash more for old lifters?

                                                   Jay