I usually use Future as a pre-decal coat, and wait about 24 hours. I have noticed that MicroSet will turn the future white, no matter how long I've let it set up, but it goes away when dry. I usually use MicroSet/Sol, and Solvaset when I need the big guns, and have had no issues with the Future remaining white after applying. MicroSet smells just like white vinegar to me, I'm not sure if there is anything else in it, but white vinegar is recommended to clean up Future, so maybe to much reacts poorly.
Brian