Backstroke Ledge at Nationals ?

I've asked one of the meet directors if the ledge would be available for the meet in Greensboro and received the answer. No. Certainly not what I expected. Last year in San Antonio, after having them available on Wed and distance day on Thurs they were removed. I spoke with the Colorado Timing rep that was at the meet who was also disappointed and had hoped they would be available this year. Has anyone ever seen/used the ledge at a masters, high school or college meet ? I have seen them at the elite Meets but no where else. When the Nationals roll around it will be almost 2 years since they were approved. I wonder how long it will be before we are able to use them ?