I have mine setup like this as well. I have just swapped my 218 for a 210 and I now only get my master speaker turn on. The other 4 remain turned off.
If anyone knows how to correct this, perhaps you could post in my topic 210 setup. Moved from 218.

I am not sure you can add delays to the front speakers on the 210 as it has a very basic settings page.

G65, HD621, 5x DSP5200SE, MC200.