Modelling Tip: How to help make your transfers super clear

There is a really simply trick I read about recently. To help make the transparent parts of decals clearer simply dip them in 50:50 Johnsons Klear & water solution before you apply the decals to your model.
I can only think that what this does is help the decal sit better on the surface of the model, but also coat both sides with a solution that acts in a similar way to a varnish, to allow the light through without distortion, thereby reducing the silvering effect that is often a risk with some decals.
However I would not forget about the basics of decal application as explained in my post of a few weeks ago: http://www.kit-chat.com/2010/07/modelling-tip-what-to-watch-out-for.html.