Aqara Shade Driver E1 doesn't fully close

[librehat]

In the code I see that you send shadeLevel=1 and it says 0 is not a valid level.

My observation with my blind is that when I press the physical close button, the blind closes to the limit that I've set. However, if I use SmartThings app to close the blind, it'll leave just tiny bit at the bottom (not 100% closed). This makes a difference as I have a completely black out blind. Using the physical button will achieve black out, but from the app it'll leave a tiny gap at the bottom.