I decided to replace the master contactor control wiring with #20 instead of #22...probably unnecessary, however, it is piece of mind.
Remove #22 control wiring.
Install #20 wiring.
Next I mounted the battery tray.
Knowing that the airframe was going to be attatched to the structure with an AN4 bolt, I removed the primer under the terminal and all adjacent surfaces to provide for a good ground path.
The battery tray was positioned and secured with specified hardware with a couple of exceptions. Following the Garmin instructions on and around page 18-41, longer bolts were used to secure the pitch servo mount and yaw damper mount. AN515-8R10 screws were used.
AN515-632 screws and AN365 locknuts were used to secure the bottom of the yaw damper servo mount.