Not sure if two people requested my experience with the BAL leveling system. See below for the reply.
Is your problem in the touch screen, sadly the touch screens don't hold up in real life use.
Example: (my opinion) our touch screen is on the side of the TT behind a door panel and summer heat might have caused the touch screen to fail.
I contacted a tech from the manufacturer of the BAL system and the above comment was given.
For a minor $450 you can order one. My replacement was under warranty so it cost me $100.
The tech (a young man) that put the new unit in said the touch screen has trouble responding to old hands
He could get my old unit to work with his 'young' hands. (I am 73
)
Hope that explanation helps
Mr Turtle (Richard)