Is my D3 Running too hot?

[TitanNoob]

Chain#   ASIC#   Frequency   MH/S(RT)   HW   Temp(PCB)   Temp(Chip)
1              60              537           6270.29     0      52                         35
2              60              537           6592.40     0      50                         67
3              60              537           6281.03     0      54                         76

Fan#                  Fan1    Fan2
Speed (r/min)   4,170   5,340


Turned on my Antminer D3, im worried about 1 and 3

Especially chain 3 fluctuates (around 75-77 degrees) (Hashrate can be 5900 until 7300)
 
The left and middle one also were a bit loose when opening, when putting in the PSU this problem is resolved
I have another Antminer and i am afraid.
These readings were after 10 minutes

[llanaio]

Your temps are just fine. Chip temps >80°C are when you should start worrying.

I have several D3s and it seems that chain 3 runs hottest on 90+% of them.