I run a similar EQ on my 1001Rbii. 4 band eq is flat, Contour and presence are both at 0, I completely cut the tweeter off (playing an Ampeg 810 with no tweeter anyways), Boost and woofer are 100%. I play metal, so that tweeter is the first thing to go. Contour, it kind of scoops it so I tend to keep that off so that I don't lose my mids and get lost in the mix with my band. Presence is WAYYY too glassy and full of treble.
Try a couple of different things with the volume. Try turning your volume up really high, and then turn the boost/woofer up.
And then do the opposite, all woofer and boost and adjust the volume with the volume knob. It'll get you high gain at lower volumes, or cleaner tone at higher volumes. Just experiment with it and see what works for you.
I've moved up to a GK MB800 Fusion, but I still run similar settings as to what I was running on my 1001.