In a message dated 10/7/2011 7:04:06 P.M. Eastern Daylight Time,
gilles.turmel@SYMPATICO.CA writes:

have to  install an adjustable armrest on my 89 Westy Syncro. Do I drive
the spring pin  top-down or bottum-up for an easier install?
Best regards.
Gilles  Turmel

whichever side has more sticking out - drive it opposite of that..   PS
use a credit card to keep the pin from digging into the vinyl on its  way out
the other side