i thought the finish could have been smoother myself, there is a "rise" on the gpu cooling part,maybe this is there on purpose to suit card?
I also found lack of stand offs a problem, i noticed card flexing under screw tension so i slacked them off a little, INSTRUCTIONS on thermal pads are not accurate , ie says nothing about them ,but the picture shows you where they go,did you not add them? if so that might be part you broke.Think in future ill stick with english companys as i cant login to forums there as in german so i cant ask questions about quality etc. Top of coolers have A1 quality only the contacts between block and memsinks etc could be better, but as long as it cools im happy.
Currently i have installed just one block as im awaiting the crossfire adapter to arrive,and am having problems finding fittings for my hose