I don't know about the leakage chances, but I'd say the quality is good except for one part: the backplate. The design is heavily reliant on thickness provided by the motherboard, so it is often necessary to add thickness, either with washers, or by flipping the backplate and re-inserting the bolts from the opposite side. For LGA2011 motherboards, it uses the backplate those have built-in, so you wouldn't have to worry about that.