bubs I use windshield washer fluid to reduce the latek and add about 1/2oz of flortrol. Youn can get flortrol at Home Depot too in the paint section. 50 50 mix is pretty close.
There was a good thread here on painting Latex by Roy Vallincourt in the warbird fourm. He also wrote the artical for Model Airplane News. It is worth a look. Rich