64 Doors

[Mjminino]

I am at that point to start work on my doors. I am going to gut the doors so I don't mess anything up during panel work and my question for you guys is:

What parts on/in the door are irreplaceable that I should absolutely be extremely careful with?

IF I remember correctly from someone else's mistake, it was something to do with the window rollers.

Thanks in advance

Mike

[Clyde65]

only one I an think of is that little channel piece that connects to the bottom of the glass frame with two very tiny screws. Oh and those two screws, those are replaceable but not real easy to find.