[Scott Fraser]

Maybe point the problem out to the owner and have an understanding
that the
recording will suffer from the squeaking and that you can not be held
liable
for such an occurance?

I've never had a client refuse to allow me to improve the potential
quality of their recording. Quite often a pedal squeak can be
eliminated just by rotating or reseating the lifter rods, or pushing &
pulling the pedal gently.

Scott Fraser