Mine was upside down as well and had been that way I assume since it was built 20 years ago. Fixed it after reading this thread. Thanks!
I went ahead and switched the handle to the other side and flipped the door, and it doesn't squeak like it did before. Definitely an improvement. Thanks!
Awesome! Glad our advice was able to help you. This is such a bizarre problem but at least it's easy to straighten out.