I think petras is one of if not the only store in the US to carry EK stuff. Besides that EK has shipped stuff to the US in the past. I dont know if they still do or if they now prefer to use Petra as a US distributor.
Do you mean it bends it simply because it weighs enough to cause the card to bend slightly or you physically had to bend the PCB on the card in order for it to make proper contact with all the components on the card? I am thinking weight of full coverage waterblocks will be a problem no matter what however I want to be sure the EK block is properly engineered before I order one.