I found the information so thought I would save everyone the headache of searching for it. This was a post by stupidfish having to do with getting a flat(er) finish out of Future?
"RE: thinning future floor wax?
You can thin Future with rubbing alcohol. If you want your models to look dull afterwards, mix future with Tamiya's Flat Base X-21 but no more than 50 precent of the flat base or it will haze pretty bad. Check out navismagazine.com they have several demos (most of which include several uses of Future) on all sorts of models built by some of the best. I hate to plug another website but we ARE here to help each other and you'd be doing yourself a favor by giving them a look-see."