adding another radiator to the case will not give you any better effect than what you have now.
especially, trying to re-order to make it "cooler" functional and making it not look like a spagetti
factory blew-up in your case.
you've replaced major elements of the system with little or no change to the issue. the conclusion
would be either this is something that was there and just wasn't realized, possible OC is now
too hot, or it is what it is... other than your wallet is lighter.
maybe take the GPU(s) out of the loop, reverify CPU heat and then insert a GPU and watch
to see what the temps do.
aren't there a lot of 810 owners on the forum? not but a few might have a temp issue.
so i wouldn't think you are any different in needing a bigger case?!?!
airdeano