I did find one that had both fans blowing in instead of out.  Also have one that has no front fan action.  It is hard to tell which way the front fans are blowing or if they are both blowing in the same direction, but the one with disabled front fans is not overheating, so I think front fans are pretty unnecessary.

Any easy way to check if both radiator fans are blowing out? Some feel stronger airflow than others when i place my hand near them, I am worried that some have mismatched orientations - since the fan-putter-on-ner obviously sucked sweaty monkey balls.

I had overheating problems mostly because 4 of the BJ were 6 1/2 feet up on top of a full rack, put them down on the floor and got a 20 degree drop in temps.