hard fit

Hi all, I bought a Monsoon kit on Overclockers.uk ( here : https://www.overclockers.co.uk/monsoon-hardline-pro-bender-kit-1-2-x-5-8-16mm-value-bundle-bu-001-mo.html ) And I am working on my watercooling but... I've an issue. The rules to measure can be combinated in 3 dimensions, like this ...