suggestion for the bottom rad:
if not shipping or moving the system, just use some double sided tape or install "L" bracket at the motherboard tray to hold it down
edit: not motherboard tray in this case but the metal plate beside the rad (i dunno how to describe that part)
I'm facing problem routing my usb 3.0 cable from my case to the motherboard header, it is too thick, I afraid I will damage my mother if I push it too much. Any easy solution?