Your temps aren't dangerously high. They are a little high, probably 10degrees or so, but not dangerous. Make sure you have the fans firmly attached and make sure they're sealed as well as possible between the fans and the radiator.
Pea is the best method for a high pressure contact. I don't have any corsair coolers, so I can't tell you how strong their mounting springs are.
P.S.
I disagree slightly with AZ on the artic 5, but it's probably better than what came with the cooler. Prolim and Gelid are probably both better, but it's a matter of a few degrees.