M. Brindos
Oh yes, as Greg said, you can go back over with the base color. You mist it over the mottled area to fade it back out a bit.
Also I was thinking earlier ; are you mixing your Vallejo paints outside of the AB, or mixing in the paint cup?
I've found that Vallejo works best I you mix it to your preferred consistency outside of the AB first. For some reason is just flows better if you mix it and then add it to the paint cup. Less spatters, better consistency, and less dry tip issues.
I hope that will help you. :)