Thanks for the information, i don't know if its leveling up or leaving down, i have seen it stuck twice same spot 2" low of top floor. Building maintenance keeps resetting it before i get there, and i am having a hard time convincing them to leave it alone so i can see it in the stuck state. I do have the prints, and will look closer at the induction switches. door locks are fine and so are the guides. thanks again for the incite!