You really should start your own thread on one of these deals, it makes things hard to follow if they "get long."
If you think it's the wiring/ neutral switch, "there ain't much left."
What I'd do next is jack 'er up and pull the neutral switch connector. Find something (small screw?) to connect into the wire connector and ground it. Try it and if it cranks, must be the switch. If not, must be the wire.
If it's the wire, I'd suspect the connection right AT the wire/ connector