This is after a fresh flash (or what I believe is a fresh flash) of the stock firmware - I unzipped the SKR Pro dual endstop firmware to my PC, copied firmware.bin to a microSD card, put the card into the SKR, and booted. I didn’t get any indication of failure, and the gantry moves correctly on X/Y/Z. If I’m doing it wrong or using incorrect firmware I’ll happily try the correct one.
Regarding using another port, I took a shot at it some time ago and it didn’t work. Is this the correct method to change the plug from PG8 (the default one as far as I can tell) to PG5 (the unused port above PG8)? A lot of people have said “edit the firmware” but I haven’t really found any info on what exactly to edit, where to edit it, etc.