Ahh one of my favourites.

The Running man is a tough one to get lots of good detailed data in light polluted Perth 'burbs.
I've got about 2hrs worth of 5min shots, but need another 2hrs more I think.
Your right about the red and blue channels. Do you use CWB? or AWB?
The CLS can drown the blue channel but this can be adjusted with the channels in PS levels and color balance adjustments.
At least it helps get rid of that nasty light pollution to a degree.
Good data there for an hours worth. Keep going with more data. There's some beautiful thick neb' cloud around the 'man.
I also noticed you got the stars elongated from corner to corner. I get this often when the polar alignment isn't good enough. I always ensure now to drift align for a good 45mins, so that drift is minimal for at least 3-5mins.
Keep at it.