Very excited for you!! Curious though. Why both the Ophos and Minicron Lite?
I feel like I am in a similar boat but I'm very confident I have the updated button assembly already since I ordered my 8 more recently.
I've tested things with my multimeter and all seems well. However it's just like the 8 isn't firing on all cylinders. All the carts do seem to fire but hits are wispy at best. Maybe I am just not debugging properly.
As another member mentioned a few pages back I can feel the center post give when I mash the button so there certainly is a connection there. The DMM shows the properly voltage too. I'm kinda stumped. This is why I haven't returned my half broke V3 Persei top yet for service.