Tweeking Valjoux/ETA 7750 movement

[bjw]

I know with Rolex in-house movements you can cheat the seconds gained/loss by the position you leave it in overnight i.e. Crown up loose a few seconds, face up gain a few

Is this true for a 7750 movement? I have a 2008 Tudor Chronograph and curious how anyone who has that watch or that movement regulates it or even if its possible.

[Tools]

It's not cheating anything, it's physics.

Gravity (and temperature) will affect how any mechanical movements balance swings; it is not specific to only Rolex. How much it is affected will be a characteristic of the particular movement, with most modern movements showing very little variance due to the use of larger springs and better tolerances.