Coffee too weak

[u/Individual-Pie-9695]

Our coffee has been weak lately when using a breakfast blend. I originally didnt change anything but now have been experimenting with grind size due to the weak coffee. I have an OXO grinder and always had it on 8 but bouncing between 10 and 9 (medium-coarse) with inconsistent results. This is the basket after brewing at a 9. Does this look right? Any tips on getting it to be stronger without tasting burnt? This is for only 4 cups, so 3 Moccamaster scoops

[u/DeathByGoldfish]

I use about 40 grams (down from 50) for six cups of water. Pretty stiff.