I will be replacing all my interior doors, and of course they are not all the same size, let alone the size that I would buy them from Home Depot. I will be trimming them both length and width. My question is the amount of available material that I can cut into for the width. Is there a lot of interior door frame so if I cut 2 inches off the side, I will still be on solid wood? Any tips of this would be appreciated. Thanks.