See, patience pays off! Glad you were able to find a program that works for you ~
Now. it appears you will need another dose of patience during the restoration of your trailer.
The problem with parting out trailers is, they have to be "beyond repair" in order to do so. Most trailers out there can be repaired, by someone...so hopeless ones don't come around too often. There are occaisionally some that come up, but having be the same year/model/parts that you need is another
story, especailly panels. That's where the patience part comes in...
Cherokee RV is a great resource...we are fortunate to have them in our own backyard! If they can't help, keep trying...
In the meantime,you may want to take your interior panels off and straighten the exterior ones out as best as you can from the backside, then straighten the interior ones and re-install them until the "perfect donor trailer" comes along ~ Maybe you will be lucky enough that the results are successful and you won't need a donor.
Good luck in whatever you decide to do...we're all here for encouragement!