Wow, great to hear directly from you here - thanks for sharing this! Hope someone from Morningstar can tell if these connectors might match the ones used inside the unit.
I got a second hand MC8, some issues with the switches like many here.
I´ve purchased some of the coupuling houses from reichelt.com, but they delivered the wrong ones - also the same as in the upper photo - they fit to Strymon Pedals.
Any information about the original coupling houses, which Morningstar uses in their pedals would be helpful. There are many different options for board wiring. Also the right crimp contact socket is important - I think this one would be the right one: