I dont really get the purpose of memory locks? I thought they were supposed to make it so you could take your hardware apart for moving, than be able to put it back together with the same settings? I just got a Gibraltar throne with a memory lock but you cant change anything unless you unlock bother the main lock and the memory lock. What is the purpose of this? Is it solely for more support, and to prevent slippage? because the the swivel top will not come off unless both locks are un-done. thanks