Doors are quite complicated with many parameters. Easy to get one wrong. Very unusual that I do one right first time.
The structure in LED is critical. For instance the sliding section has to mate with the adjacent sector (the one with the texture on) with matching vertices. If you do a double door, each side must have it's own matching outer sector front and back. You can't bridge over both side with one sector.
Door textures are also tricky. On simple doors you can usually guess to alignment. But if you want to do critical alignment it's harder. You may think - make the door without the sliding part - use OGL viewer to get the texture just right - compile and then put the sliding part in. The problem is, when the sliding section is active the texture alignment is screwed up. The only way I found was to keep tweaking until it lines up.
It's actually easier to make the doors as objects and make them Dynamic like gates. You can have them swinging then.