thanks w3bbo for some possitive newsHow can there be anything wrong with his mount? The delta between idle and load temps is quite good. If the mount was bad then load temps would rocket sky high. You can try remounting but I don't think that will solve your problems. You could try lapping but again if your mount is fine and the surfaces are mating correctly I doubt you will see much of a difference.
You probably just have a hot chip (B3's run hot).

What temps is anyone else seeing with a q6600 B3 under water just for interest sake ?