I have used the method I suggested to get a low reading cyl or two up to
normal pressure on several wbx engines. Through hard experience I have
learned not to treat a wbx valve train as though it is likely to have
all its parts in ideal condition or in ideal adjustment. Messing with
the adjusters should be done rarely and only for a good reason.

My mention of flat spots and high spots on the adjuster tips isn't
because I think that is the actual source of the low compression in this
case. It is to instill awareness of common wear patterns so when someone
has reason to touch the adjusters of a high mileage engine they are
advised that fractionally turning an adjustor one way or the other may
result in the opposite of the intended effect.

The real objective here is to try to accurately ascertain the cause of
the low compression reading so a further course of action can be better
determined should one be needed. Ultimately more may have to be done
than a simple turn of the screw.

An additional value of 360 degree turns of the adjusters for this
procedure is so you can know where you started, where you went to, and
hopefully how to get back if that is needed. I was not suggesting that
if loosening the adjusters 360 gets the compression up to match the
others that you should just stop there. It is simply a quick test.

Mark