[suicideneil]

V-twin = kill it with fire.

Q. Do the motors work at all when they arent meshed to the spur?

I cant think why it wont work, it all seems wired up correctly.

Do me a favour- remove one esc from the Y-harness and try them individually from there- swap them over too, to check it isnt the Y harnes causing issues (since they work fine individually).