Dual Xeon build

I've had these Xeon processors sitting around for a while now and I thought it's about time to get a motherboard for them. Two are clocked at 3.0Ghz/1MB/800, other two are at 2.8Ghz/512/533. I ordered a Super Micro X6DVL-EG2  from eBay for $120 of which I seen this motherboard up to $250. Anyway, came the other day and finally put it together. Heatsinks didn't screw into the case as it should, so I had to screw the nut right onto the heatsink.