Hi again, an update.
So my case fans connected to CHA_FAN1 and 2 fine, looks like it locked in place and can’t be pulled out easily.
It seems that the Kraken x73 wire that connects to CPU_FAN doesn’t properly lock? I’ve tried to connect it to other fan connectors and it’s the same. I am positive I am putting it in the correct way as this is the only way where it goes into the connector. Any help please?