Mine's in the shop today. It was ordered in mid-May.
They just called and said the one they got doesn't have the heater for where the wipers rest. They called Toyota and were told it's a three-month back order. I park in a garage, so told them to install it.
There are four notches set into the bed for 2 x6's. I haven't hauled that way. The last time, I think I loaded a sheet of plywood flat, held it up, and closed the tailgate.
Sorry, but nope. But six bits say you know someone who's got 3D printer. Ask around, a lotta guys have them.
Here's the file and magnet size:
https://www.thingiverse.com/thing:6742234
I guess I don't understand your question. You change the setting with the up/down button while it's on. What difference does it make what it's set at when it's turned off? It's off.
Just reset it when you've hit your cruise speed.
While you're in cruise control, you can adjust the speed with the up/down button. When your not, just hit the on/off button when you get to your desired speed.