I ran pro alloy stuff on my last RST's, never let me down. Had an S1 with the same kit on it that kept punching a hole in the cooler (s1 set up doesnt have the fans mounted between the rad and cooler so they rub a bit.

However I let PA know and they took it back and sorted it, even replaced it and made me a "anti rub device" (aka bit of rubber round the cooler) that was the second time it happened, so even when it did terminally fuck up they sorted it.

Cant recommend them enough.