As for the binding posts they are a quality CHK item we picked them for not being Audiophile expensive but well made and branded, would they work better with the spade opening pointing upwards? If so I will install like that from now on let me know. If that works you just need to remove the first nut, loosen the second enough to rotate the post through 180 the hole is squares ish to stop rotation. Be careful to make sure the part you turn is seated correctly with no gap between it and the body before you tighten as it wont rotate properly.