My Asus X99 Pro USB 3.1 motherboard has a defective memory slot D1. I want to upgrade the memory to 32GBs and found several single sticks but they require the D1 slot; can I use another slot instead? The same if I buy 2x16 sticks..still one has to be in the D1. the same question applies. Other wise I am forced to buy 4x8 and then only use 3 sticks, ending up with a degraded 24GBs and one useless stick.