@akan33
Meraki support was really good in this instance. I explained the issue, and they asked me to move the equipment to troubleshoot more, which wasn't feasible. While the switches were stuck at 87% the network upstream would be up for exactly 2:01, then down for at least an hour, and repeating... but some functionality is better than none.
They sent swaps which were quickly configured, in place, and rock solid as Meraki equipment usually is. I've got nothing but green in my dashboard!
I usually hate to call support, but I am confident that if I have any further issues, I can call Meraki support and talk to qualified people who will do their best to help me.