Was planning on using Blum 563H slides for yet to be built inset drawers. The only locking device I can find that is specifically specified for inset drawers is the BST51.1700.PVx. But it is specified only for the 562 series of slides. Blum sells something else that looks like that for the 563 drawers (BST51.1901PSx) but I can't find if it is for use with an inset drawer. So is the BST51.1901PSx the equivalent of the BST51.1700.PVx but for the 563 series slide? Perhaps there is another option I have failed to find? Basically all I want to do is to properly adjust my inset drawers so the maintain their adjustment. Anyone else find the Blum information a little confusing?