alright, let me try to help you out.
could you tell me how all your mics are positioned?
my kit is
a Yamaha Stage Custom Advantage. It's a good "budget" kit. I use all Zildjian A cymbals. Snare's a shallow Ludwig. My room is about 15x30, though it's got all sort of jutting walls and stuff (converted from a dining room & living room combo) with carpeted floors, 8' ceiling, and some foam on the walls. It is definately a "dead" sounding room, though not in a bad way... I like the sound in there. It doesn't really compliment anything, but it doesn't ruin anything either.
i use a D112 for kick, about 5" away from the beater inside, leaving the front head on. SM57 snare, pointed at the side of the shell from about 6" away. MXL603's for overheads, though they are not really overhead at all... i use them as a space pair about 8' in front of the drum kit (which is in the corner of the room).
So basically, I do everything you're not supposed to do, but it's what sounds best in my room with my mics.
you really just have to fool around with mic placement till you get something that works.
I am a little curious as to your overhead placement, though. I thought the MK012s were supposed to sound similar to my MXL603s, yet yours don't even sound like condensors to me... i honestly sounds like you're using 57's for overheads or something. there's just no high-end coming through.