Phil:
Remember, the spinner holds the wheel on, the pins take the torque load. Put them on very snug (lead hammer), use an anti-seize, and wire them on (0.041). Leave a little slack in the wire, and check it before each drive to see if the slack is disappearing. If it is, you're coming loose.
Don't leave them on forever as the spinner and wheel will become one (like
oil filters and lug nuts).
Bob