All I can say is ,,, JUNK! Why is anyone wasting their time on these way under performing stable overclocking wannabe not so well thought out or engineered rush to market quick made crap by GrimeSeed? Magic Black Smoke makers! POOF!
I loved the 5 chippers. Had a ton of them, very stable little things. But the blades were made to run at their recommended speed for a reason! Because they are generally not stable at all when overclocked! I mean, look at the mess of junk you have to throw on them just to keep them from going in to melt down in the first place...
If you can get your money back because the seller mus-represented it as stable, do so.
Then don't waste any more time or money on GS Blades. Try the Zeus miners. Much more bang for the buck and very stable machines, at least the ones that were made and wired right in the first place when they were brand new!
If you are really in to experimenting when them, then go for it. But I think you're wasting your time.
Good luck!

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Zeus Really ??  We got stable 400 units of Gridseed 6 MHz tuned as shown. And each unit consume less than 100 Watt.
Zeus is history and Gridseed is still kicking. SFards.com if you don't believe it check it out.