Ok, I was just curious whether your guitar sounded darker or brighter. I won't recommend particular settings, because we all hear things differently, but I will tell you how I would go about the process:
1) Set everything at noon. Mesa's sweet spots tend to be around this area. Turn Contour off.
2) Set Gain to taste. Don't go overboard here. Both Treble and Contour will add a lot of perceived "gain" later.
3) Set Treble to taste. This is the MOST powerful tone control! As Treble goes above noon, it overpowers the other controls and adds tons of gain. With that in mind, be conservative.
4) Scoop the mids a little bit, but not too much. Mids help the tone cut through a band mix.
5) Set Bass to taste. For what you want, keep the Bass pretty low. This is why so many people on hear say to trust your ears, not your eyes. It looks weird to see something set so low, but if the Bass is turned up too high, you will notice "flubbiness" to the sound.
6) Make sure all of the above controls are where you want them. This is the foundation of your sound.
7) Finally, Contour. This is basically the same sound as the graphic EQ on a Mark series amp set to the "Classic V" shape. This is a pretty powerful little knob, so be delicate with it. Extreme Contour settings can make the tone harsh and thin.
Lastly, remember the exact same settings will sound different in different rooms, with different guitars, and at different volumes. Also, tubes need to warm up. If you turn your amp on and start playing immediately, you'll be tempted to start tweaking knobs. As the tubes warm up, the tone will come back. Just be patient, and you'll eventually find what you're looking for. Also, don't be afraid to use a good boost pedal if you find that the amp isn't enough. Too many people think that if the amp alone isn't exactly what you want, then it's "not the right amp." However, most of your favorite artists use some type of stomp box to push their amp that little bit harder.
Hope this helps.