Topic: Monitor sends and main output

I can’t work out why my drums are still coming from the main out Of my 802. I have the main speakers as hardware outputs 1&2. The drum monitoring is on 3&4. If I select the Main output fader and turn down the drum channels, they don’t stay up in 3&4. They turn down. Is anyone using Control Room in Cubase? Should I be using other channels than 1&2 for speakers?

Fireface 802, Octamic II, UAD Quad, Midas Venice 320, Cubase, Windows 10.