You are asking all the right questions. My previous owners tinting installer
made all the mistakes that you mentioned:

Sliding side windows were tinted not "completely" but only where completely
accessible so there are dumb looking gaps. I will be watching to see if
anyone knows how to dismount the slider section to apply film to the whole
of the glass. I too wonder if fuzzy strip would the abrade tinted part would
  away, you know the tint is on the top layer.

I started window tinting on my 90 Westy.  This was my first attempt at =
>it, so naturally I read up all about it in the archives. It's all good =
>useful information but...
>I used metallic film with 20% light allowed through.  I find that still =
>quite light and want to go to 5% film.
>Any comments pro or con from members who have done this?
>I ran into a problem trying to put the film on the sliding glass =
>windows.  Is it possible to get the film to cover the whole glass =
>including the part that goes past the fuzzy weather-strip?  Is there an =
>easy way to take the glass out of it's track?  Does the fuzzy strip tend =
>to peel the tint film?

Perhaps this is why they did not apply tint to this part of the glass in my
case.

>There is a lot of information about how to deal with the side window =
>behind the closet.  I will decide whether to remove the closet (I don't =
>haveAC) or remove the window or have my wife reach into that cramped =
>space.

I do have AC and somehow the tint was applied all the way to the back
HOWEVER not as well as the other places, it is bubbling and peeling here and
nowhere else in the vehicle.

>This project now is on hold for about 3 weeks and advice from the =
>experts would be appreciated.

Hear, hear!

I have read extensively about removal, takes heat, ammonia and razor blades
(tempered glass can be easy to scratch this way. The defrost decal on the
back window is very easy to damage I guess.

Robert
90 MV
Ed Wiebe