Your wiper blades have gotten stiff and aren't soft anymore.  That is why
they will not wipe unless you push down.

If you insist on playing with it, get some new blade holders that are
taller.

Ted

Wiper arms are sold as an assembly only, you can't buy the spring
separately.

It's common for the last couple of inches on the right passenger side to
miss
the glass because of the curve of the windshield at the point. It's also
common
for the wiper to miss the glass at highway speeds if you're using winter
blades.
And don't forget that the passenger side uses 18" blades, not the 20" on the
driver's side.

New wiper arm is about $23 + s/h.

Well that might be $700 CDN, maybe I'll check Ford first.  Its a spring
thing.  How to fix?  I could shim a little on each end (couple mm), or add
another little spring partial or full length, or replace the whole one
spring.  I wonder if there are places that could tell me what spring I need.
Apparently spring pressure is advertised somewhere by Ford.  May take an act
of Congress to get it.  It might be a trick changing or adding a shim or
spring.  May have to remove the arm - don't know if thats tricky for
wahtever reason.  I tried 2 different brand new wipers.  Its the middle of
the blade swipe (about 65% of sweep area).  It only takes a little more
pressure, back of baby finger outstreached arm.  I bet theres a lot of this
going on!