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Hey Fred,
Is the cable tie on the motor brake temporary? Because of the helical bevel gear gearbox type (ie not worm drive) the load can be passed back to the motor and it can freewheel if enough torque is applied to the motor, like from extreme wind in the direction of opening. That's why they use brakes on those motors without worm gears. I would assume that you would using a VFD drive which should output a brake control signal to prevent that possibility.
Otherwise pretty cool setup. Having had the experience setting up these large buildings, I know how much work they can be. Well done.
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