If you want your XMS modules replaced, you can RMA them to us. http://www.corsair.com/support/technicalsupport
FYI, the Value Select is our OEM grade memory and it not as well suited for higher performance MOBOs or OCing. And, the heat spreaders are a nice touch in a system that is running a hot GPU, low case airflow, etc.
That said, at stock, the VS memory is great and will get the job done.