Custom hangar question

I have a small question to my fellow CDK users out there.
How hard would it be to fix this custom hangar: WT Live // Location by FinzolaK

i REALLY really want the 2016 hangar to fixed and usable again, and seemingly there is not much issues with it at the moment, other then some textures are being streched out:

And others being just seemingly incorrect:

Most of the hangar is still very usable and not even that bad:

So my question is, how hard would it be to fix that? I have no experience whatsoever with CDK, however im willing to put my time and effort if it will bring back the hangar to its old glory. Im just very sentimental about the old 2016 hangar and i would love to be able to use it again