I asked Reese about lube plate. They confirm what you (old coot) and I have been say in. Here's the reply.
"If you use the Reese Revolution Hitch and activate it by installing the wedge at the rear of the hitch pin, you don't need or want a disc at the hitch pin. The hitch pin does not rotate at the hitch. The trailer pivots 22" behind the hitch pin at the trailer pivot."
2013 Rockwood 8282WS
Reese Revolution Pin, Reese 16K
2008 Tundra Limited Double Cab 5.7L
Air Lift 5000 w/Wireless Air