Thank you, sorry about the long time before replying. They had to come via the slow boat. The amazon link below is the one I was able to find still available.
I'm not the best at soldering so I had an avionics tech I work with help me with that part.
The solder job looks good. Unfortunately the directional buttons only activate while the center button is depressed, and the left and right are swapped. Guessing it was wired inverted as there aren't any obvious markings for which way is up on the switches we received.
Is there a way to know if that is the case, or any guidance on how to proceed before attempting repair again? Perhaps a wiring diagram, so I can do continuity checks from the switch to board before reassembling again.
As for the warranty, my botched repair not withstanding, I was a couple months past the date being a US customer.