WD40 is not a lubricant.
I bought these bindings a couple of years ago at the Carbondale store. I asked the clerk if any lubrication was needed for the bindings. He said no, you're good to go. I used them a couple of times on local hills before going on a trip to the Eisemannn Hut. After unpacking, I went out to ski with my friends. The left binding would not lock down into downhill mode. I took the skis inside and warmed them up until I was sure they were dry. I went back outside to ski. Binding still would not lock down. We took the hinges off the hut keepers closet and found some WD-40, blasted it into both bindings, and went skiing. The bindings have performed well since then. You need to train your technicians about products you sell.