> Any advice for removing the plastic twist pins that hold on the
panel on
> either vehicle would be really appreciated.

what is needed is a special tool. it looks like a fork, but with only
two tines, and a large gap between the two tines.

the button is shaped like a V (with the button on top) if you view it
from the side, but if you turn it 90 degrees it looks like a T. the
trick is to slide the tool under the button head and get it straddle
the T side. then you can pry up with out damaging the button or the
cardboard/vinyl.

you can make the tool out of one of those little Stanley 'pry bars'
that is about 8 inches long. or find the tool in some of the Autozone
or local auto parts stores ... the one they usually have will have to
be filed out a little. two screwdrivers, side by side, can work but
are harder to manage.

good luck!
joel