I will confirm that our RE003 and the new NA market Firehawk Indy 500 (sharing a tread pattern) are Assymetrical and non-directional. as long as the larger treadblocks (denoted by an outside and inside label) are on the correct side, they are mounted correctly and can be rotated to any position on the vehicle. directional tread is symmetrical wrt the centerline of the tire.
Besides tire pressures, I am not sure what else with regards to the tire could cause your pulling issue. I would try looking into the alignment again
