Front lid extended during performance

[Ron Nossaman]

>   This is what I need to know: 
>  
>   As a registered member of the Piano Technicians Guild, what is my 
> official responsibility to advise the owner of a grand piano if I see 
> the front lid extended while the main lid is propped up?   What must I 
> say if they ask me whether the front lid IS or IS NOT designed to 
> tolerate that configuration?

The safest thing to tell anyone in any situation is NO! No 
matter what, you're covered.
Ron N