Try these numbers, if it doesn't react like you want try these numbers and do -100 or +100, for the Off and On, it works a little bit like the doors.
For an express well, copy these numbers on FallXPos, FallYPos, OffXPos, OffYPos, OnXPos, OnYPos. That may not work but it's worth a try, It usually take me some time before I find the good configuration.