EK, I just purchased 3x Acetal & nickel blocks for my GTX 580s.

- In order to check and see if corrosion is occuring on my blocks, I'll need to remove the "warranty void if removed" sticker. Will you still honor the RMA proceedures as outlined in the OP?
- Also, if my blocks are OK...I'll need to get an official recommendation for a fluid which can be obtained in the USA. I am not familiar with the options you listed.

Thanks