All of the coatings KG produces should come out smooth. Rough finishes are generally caused by too much air pressure, the substrate being too hot, too little material flow, how far the spray gun is held from the substrate or a combination of these. Adjusting the air pressure, material flow, preheating and holding the spray gun the same distance from the substrate is critical and when accomplished will yield a smooth finish.
Of all the reasons mentioned above the most common is too much air pressure with the substrate being too hot. This will cause the coating to dry before it hits the part, creating an almost grit like texture.