I never use Future over my decals, (I hate mixing stuff) but it sounds like either you may have gotten an old batch that has yellowed, or used it in too great of a strength of concentration, or there was something about the specific decal manufacturer's product that was sensative to the chemistry of the Future product, and you got an adverse reaction.
That's why I stick to clear acrylics for decal overcoating.
Tom T ![Cowboy [C):-)]](/FSM/CS/emoticons/icon_smile_cowboy.gif)
Tom T
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