How should I sit in front of my 85 key acoustic?

[ranniks]

Usually when I'm on an 88 key grand or my teacher's 88 upright, it feels sort of different you know.

Is there a particular way I should sit in front of my 85 key upright so that it makes no difference if I play on an 88 key the next time?

[quantum]

Pick a key to center yourself on, like middle C, or middle E-F.  Then always center yourself on that key no matter what piano you play.

[ranniks]

Pick a key to center yourself on, like middle C, or middle E-F.  Then always center yourself on that key no matter what piano you play.

Thank you!