[Rupnick]

The problems 1675 experienced with the 6 in wheels where that there was not enough distance between then roller edge and plate edge causing the plates to grab into the carpet making any turning or strafing impossible. That was mostly remedied by taking each wheel and grinding each and every edge down. I took Ryan and myself a total of 3 hours to grind the 4 wheels. that doesn't count removing the stripping the rollers, reattaching the rollers, and mounting the wheel at the following regional. Also we had problems with the plates them selfs concaving under the strain of strafing.

AndyMark is redesigning the wheels with the corners removed and thicker plates for the 2009 FRC season. Granted they will get a tad heavier but, they are so much smoother and smaller then the 8 in.

As for the X vs O thing.
Mecanum can be used in 2 different "orientations" we played with this for the 2007 season. X gives you more turning but less strafing, O gives you more strafing less turning, so thats how that works, your not "wrong" but you may not be using the orientation you need for the specific game.