Danny,
Re your 7732 I understood that if an nco or w/o (master aircrew) was commissioned his pay, if greater than that of the commissioned rank he achieved, would remain frozen until his new rank pay caught up i.e. you couldn't be worse off pay wise. In 1954 one of my mates had been a f/sgt pilot, was commissioned as a fg off and earned more than me as a fg off who had been commissioned when I got my wings.