It would be helpful to know what sort of tones you are trying to achieve. There are LOTS of tonal variations to be had with this amp. Is the "blanket" over the clean channel, the distortion channel or both? If you don't have a manual you can download one for free at www.mesaboogie.com . Some good information there.
The Maverick is somewhat unique in having two separate preamps instead of the distortion channel just adding cascading gain stages. To get sparkling cleans you probably need to turn the output level up fairly high. Turn up the master on clean channel, then adjust the volume and start your eq tweaking with the treble control. Somewhere around noon the mid control on the clean channel starts adding gain so be careful with that one. It is easy to add too much bass, it will not enhance after a certain point but rather create an unpleasant murkiness that will not go away until dialed back.
I find that I prefer the sound of the distortion channel at lower gain settings. The Maverick is not the right choice for metal. Actually the clean channel does a better metal tone than the distortion channel if you tweak it correctly. For metal, use a pedal. Again, treble first, then mid then bass.
Some tips that make a huge difference in the tones from your Mav.
First, try some different tubes in V1 and V2. I have enjoyed various combinations of 7025, 5751, different brands of 12ax7 and 12at7. This will bring out the mad scientist in you and you may find your tone there.
While I prefer to run the tube rectifier with a 5v4 in it to keep the tubes a bit cooler (my Mav runs HOT), you may prefer either the stock 5AR4 or the solid state rectifier (tighter bass at higher volumes).
Experiment with different speakers. The V30s do have their shortcomings, especially where tight full bass is concerned. I happen to love either Peavey Scorpion Plus or Black Widow (the paper dust cover ONLY, not the metal) in my Mav, your results may vary.
Have fun and hang onto your Mav, it is one of the most under-rated amps in the Mesa line-up