differences in pianos

[liszmaninopin]

This could go just as well under the performance section, but an experience yesterday inspired me to think of this question.  I was doing an audition for acceptance into a music recital in our city.  The piano they had me play on was a good one, but it had a very different feel and sound from the one I practice on at home.  In particular, the treble seemed weaker than I would have liked.  I did fine, but not as well as I could have.  What do you do to counterract the effects of playing on a strange piano?

[A440]

Play as many pianos as you can – next time you are coming up to a test visit to your local pianos dealer and play on the used ones

Barrie,

[Steinwayman]

Never play anywhere without your own personal Steinway D and technician, flown in for the occasion.

Oh, wait.  My mistake. You're not Horowitz, Michelangeli or Zimerman.  Sorry. The rest of us just have to make do with what's there and hope we get enough time to practice on the thing before it's performance time.