Modern Tremolo intonation adjustment

Hi all,
Have a Musicman Sabre and very happy with it.
I Need to change the intonation adjustment for some strings but not figure out how to access to the screws under the Trem bloc on the Top. At the back of it there is litlle hole but realy small. Does I havbe to remove the top block and if yes how ? Need to openback the trem plate at the back ?

No video available on Youtube to see how to adjust intonation for the Modern Tremolo…

Thanks in advance for Your help.

Regards.

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