I've swapped coil packs 1 and 7 and the miss remained on 7.

Plugs had that 'scary feeling' coming out as if they were seized. Discovered them to be NGKs with the MB logo with the tips are badly eroded. I'm assuming they are original... 105K miles.

Both plug wires on #7 measure approx 2.3K ohms however, one shows to have approx 40K ohms leakage to the metal shield. That would explain the dead #7.

Awaiting parts.