Hi Patti, thank you! I hope you can get your ParkLiner door fixed affordably. I'm looking at the poor door fitment on ours, too. It's not as bad of as some others have described, but it's going to take a decent amount of weather strip to get it as sealed as it should be. The lack of seal seems to contribute to the poor cooling power of the AC.
Speaking of the AC, I took it all apart and decided it's not worth the effort to spend anymore time trying to fix the factory setup. I'm pretty certain we're going to install a mini split. I've determined a good mounting location in the cabinet box above the back window, and will run the lines only a few short feet to a rack for the outside unit that I'm building above the back bumper. I have a buddy who is an AC tech, and he thinks it's a good plan. He'll be my project manager...keep me from making any major mistakes, hopefully.
I'll post a new thread if/when I get it running.
Cheers and stay well!