MSO5000 fan mount

So finally that fan got on my nerves, and I replaced it. Before replacing the fan, I first used the "project mode" to look at the IC temperatures. This feature can be activated by quickly pressing "Menu, Menu, Force, Menu" on the trigger buttons. This enables a new menu item "board test" in the self-test menu. Unmodified, my scope reports TempFan=51.8°C and TempMADC=65.8 °C at the price of an annoyingly loud fan.

Where the MDAC refers to the heat sink close to the analog frontends, whereas the TempFan is the adjacent chip.

I first tried https://www.printables.com/model/67412-rigol-mso5000-fan-holder-for-noctua-fan/ with the recommended 92mm Noctua NF-A9, which gave me highly elevated temperatures of TempFan=59°C and TempMADC=76.6 °C. I believe this to be mostly cause be the center of the fan being positioned over the MDAC heat sink - preventing crucial airflow onto that heat sink.

Attached, you can find my own attempt for an alternative fan mount. I have chosen to mount the fan in