IFT, the Brit had flying control locks. Possibly the 'locks and stops' statement was to ensure that once removed, the flying controls were 'full and free' and that the flying control stops were sensed during the range of movement check. I can remember using a handpump located behind the Captain's seat to pump the locks in. It was a long time ago and eight or nine aircraft type licences ago. If I am wrong I stand to be corrected.