Amplifier channel placement

[Jbrunwa]

I listen to about 50% music using only L/R and 50% movies. I just noticed that the right side of the amp is warmer than the left.

I have always connected my speakers to the back of my amp as follows:
Channel 1 - Right
Channel 2 - Left
Channel 3 - Center
Channel 4 - Right Surround
Channel 5 - Left Surround

Would it be better for the amp to rearrange the channels, to distribute heat, something like?

Channel 1 - Right
Channel 2 - Right Surround
Channel 3 - Center
Channel 4 - Left Surround
Channel 5 - Left

Note: my amp has 5 channels so slots 6 and 7 are not populated.