I just bought a slightly used Microbrute, and I had pretty much the same problem as the poster just above me. Pitching down worked fine, but pitching up made it step down before stepping up. I ran the wheel calibration software and it didn't work. Then I closed the calibration software, rebooted my microbrute and tried the calibration software again. It worked, and my wheels are now working fine!
EDIT: ...but now the sequencer is not working.
EDIT2: ...got it to work by fiddling with the clk/gate switch in the connection software. All is well now, it seems.