Electrical Gurus Please HELP!!

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The motor is grounded with 3-- 14 gauge wires in various places and 1 of those braided grounding straps.

You posted this while I was typing.
This is your problem.
You need a wire the size of the power wire to the starter to ground the starter. 14 ga. wire is not enough, nor is a braided strap. They are fine for the rest of the electrical demands (gauges, ect.), but not for the starter.