[70post]

I'm assuming that's vinyl on the lower third and not carpet...can't tell 100% from your pic.

1) Is whatever covers the lower third SEWN to the underlying door panel board (sewing line would be out around the perimeter, probably 1/4 - 1/2" in from the edge)??

2)The lower covering is also likely wrapped around the backside of the underlying board...you may be able to see the sewing line on that side as well. It may also be glued on the backside.

You should take your panel with the BAD lower 3rd and do some checking....since the lower third on that one isn't any good, try peeling back anything on the backside away from the board and then proceed to the front side to see if there also appears to be glue there (under the vinyl, holding it to the FRONTSIDE of the underlying board. If it's glued on the frontside then that will likely be the biggest challenge...removing it without tearing up the underlying board. Still, slight tearing-away of the underlying panel board can likely be dealt with.

3) It appears there may be some sort of "topography" to the front side of the vinyl....am I seeing some pressed in channels in the vinyl on the front side?? (on the lower third portion of the panel)

4) How is the<span style="font-weight: bold"> underlying door panel board</span> on the lower 1/3rd on the good panel you have? Once these are warped up real bad there's a likely limit on how flat you'll ever be able to get that part again (short of replacing the underlying board).

5) How stiff is the vinyl on the GOOD lower third panel....especially around the edges and where it's folded around the panel?

If it looks like the vinyl covering on the lower third can be peeled off with relative ease then a decent local upholstery place should be able to handle the changeover, any gluing, sewing, etc. I'd say &quot;send it here&quot; but shipping two ways wouldn't be real cost effective (likely get hit with a UPS/Fedex &quot;Oversize&quot; surcharge) + the cost (primarily time, minimal materials) of the work.