Cooler on lean?

I am using a noctua d14 but I just noticed that it's a lean away from my cpu/board it's straight from the the side panel but if u look at it from the front of the case it's leaning is this a worry will it not be as efficient as if it was straight 

It's a big heatsink , it's got a lot of mass  ,it's going to have a bit of sag . It should be ok.

Alright thanks 

I dont think that a sagging heatsink is ever "Ok". If its sagging, then it could be doing damage to your CPU or motherboard. Be sure that its installed correctly, and that its mounted tightly and securely.

So I might uninstall it and reinstall it