well, E6 used to have a prewet step--but mostly this has been eliminated with the newer process. If you do use a prewet still, mostly they recommend kicking in more time to the first developer. Kodak and others don't recommend the pre-wet, because it can cause inconsistencies with speed & color.

what I don't understand is how you can mix up E6 at half strength and *not* have any problems....It could be that you're not shooting anything with dominant neutral tones, but you would have one messed up control strip for sure....