Eurathane reducer works very well with tractor paint. I slows down the drying time and allows the paint to flow out and you won't be plagued by over spray. The paint slows down enough to absorb the over spray. I use nason medium speed reducer.

Frank Cox
Cox Custom Cars


No better smell than that of fresh paint. I've been building and painting cars/trucks for 47 years. Not gonna stop now.
http://www.coxcustomcars.com/