Thanks, I will try some more to get the noise to go away when I get home from work. I havent done any rocking like a baby lol, just gently tipped it in different angles to see if the sound changes, it gets much worse and seems like it even stutters, and the opposite on it's back, runs seemingly perfect. So yeah I'll try some more when I can.
The hoses come out the sides of the radiator and pump, it is mounted on the roof of the case arcing in an L shape down to the pump.
It is a H100i Platinum SE, I can perhaps get some information off the sticker on the radiator too if I end up taking the radiator off again.
Thanks for your advice, I shall let you know how it goes :)