Actually, I did call OWC this am. The first guy told me to run Rember to test the RAM, but I told him I was very concerned about heat, since the fans keep going on. So he recommended I run iStat widget to check the temp while doing it. CPU went right up to 170f. So much for that.
Called them back, fine print says 16GB RAM can only be used under Lion. I'm going to pull one chip, I guess, because Snowy is only going to be around for a limited time. Will pull one chip, run Rember, then pull that and put in the other one and run Rember again, make sure both are fine and put one away for safekeeping. I know if I only use one RAM slot I will lose some performance. I'm not sure what to do, for now I will test the chips individually, I guess.