As mentioned in another thread, I bought two sleds to try out. One sled damaged near BR diode by some sort of acid corrosion, diode failed in slope test setup at 140mA. Other sled had physical damage near BR diode, failed when I reached 180mA. Both failed by turning into LED's. In the same test run, I also processed two 6x diodes from Glenn's GB, these worked perfectly, one is now in a brass custom host, delivering 290mW. I don't think that there was a problem with my test procedures. There are obviously a couple of good sleds mixed in with many dead and damaged ones. I got some absolutely trashed SW-AF210 sleds where the diodes were all perfect ... Hard to say what will happen when you buy sleds. I wish other members better luck than I have had with 8x sleds. I guess it's simply time for me to buy 8x burners and extract the diodes ...