I remember doing my CPL skills test with an ex-RAF CFS chap. Anyway, casually discussing his career whilst on the navex he told me that he had been with CFS at Little Rissington. I offered that he must have loved his time there. His response:
"Not really. Too many A1 QFIs pontificating with each other about how aircraft actually work, producing complex theories that just confuse the students".
I passed my skills test and learnt something at the same time.