Any tips on chasing 6 core alarm in to the wall? Im going to mount the control panel in the spare bedroom wardrobe. Coming down in to the lounge. The options for getting the pir's to the rest of the downstairs rooms are either chasing a small gap down the wall and across using a small handheld cordless plunge saw, or removing the coving, putting the wires in then recoving some of the lounge. Any tips or tricks please from the masters appreciated!