How to make both Y-Axis have the same scale?

I am trying to plot two time-series queries on the same panel (instant metrics and rolling average), and whatever I do, I cannot make it plot it on the same scale:

Whatever I do (tried hiding right axis, moving it to the left, overriding units etc.), it chooses the green line max to be 6k, and the yellow max 4k, so the chart makes no sense. The only way I found to get around it is to hardcode “Soft Max” override for both series to be 6k, which I don’t want to do, because the actual range can vary over time.

Is there some way to make it plot both series on the same scale with max being highest of the two?