when you put a lever attached to a piston it destroys depending on the direction, while activating or disabling.

Quello che mi aspettavo che succedesse era ...:
you should be able to attach a lever to the pistons without it destroying

Quello che realmente accadde fu ...:
placing a lever above the pistons as soon as it activates it immediately re-off destroying itself, while if placed behind when activating the lever it will activate the pistons but as soon as you do the reverse process (re-disable it) it destroys itself.