Hi guys, recently I went from Norge 2060 stereo amp to Denon 540BT surround receiver. Earlier model did not have any display so I used it nearly 9 years without worry and never had any significant issues. On the Denon receiver the temperature is displayed and is usually between 55-60C. Is this okay or should I be worried? Room temperature with AC on is 25C (I am not comfortable with lower setting). I have kept blu-ray player on top of the AVR and it occupies about half the top area, so perhaps I can try to make some gap between the two to increase the open grill area, but is it required?