Reply To: How hard is it to fix this?

Here’s my best effort so far.

The worst window in Object mode:

The worst window in Edit mode. I had to subdivide to get rid of a lot of the horribleness:

The other two windows in Object mode:

The other two windows in Edit mode:

I felt like I was moving toward success by getting this far, but I hit a dead end both for ideas and execution.

Repairing meshes at this level of detail is a struggle for me. I’m not a 3D artist that models. I do set design and animation. But I have found out that some basic skill at modeling and texturing is required to get things to look good when I’m using someone else’s models. This one, though, has exceeded what little knowledge and skill I possess!