if temp0 is your cpu temp, you can up your volts a lil without adding much heat.
have you tried an unlocked 3.2 ? you should be able to hit 3.2 24 hours prime stable with no more than 1.42v on the cpu. actually you should get 3.2 a bump over stock voltage(1.4v or less) if its a good stable unlocked chip.
you should be able to hit 2600(minimum 2400) on stock cpu-nb volts.
Last night I opened the case on my haf and my temps dropped . I'll see if i get a chance to work on it tonight after i get off from school.