Could you please upload a photo highlighting the issue? The plane is supposed to be symmetrical. I suspect he only modeled half of it and then used mirroring tools to create the other half.

yessir I don’t have any prints near me at the moment but the model in the slicer shows what I mean.

It turns out that he did not use symmetry tools to build that part of the plane. I will ask my soon if he can fix that

Building a stand is well within my skill set. I don’t need to ask my child :) I will post something here if I come up with a useful stand

That's great you don't have to ask your child, having a skillset for yourself is an honorable thing :) I figured since you made it a point to make it known that your children design these, I figured they'd want to do that too. I did end up coming up with a stand myself though.