I had a 2013 2670 bhs. I purchased some seal lube from my dealer and tried the baby powder. Both worked fine and the powder attracts less dirt.
I used a silicone spray on the cables and pulleys.(spray lightly wipe excess off with a rag.
Just make sure no one walks on the slide when its in!
Also on my 2670 the screws from the benches went threw to the outside of the unit. This tore up the plastic threshold some from open / closing the slide. Noticed it from black shavings on the floor.
Did not open / close once a week either.