It all starts with your crew. the screed man has to have the right thickness and the lute man has to push off the right amount of material. jump on the seam as soon as you can,and pinch about 2″ of the hot material and then go to 4″ and then about a half a drum. and so on. and the weather makes a big difference. a cold seam will always show more than a hot seam. and a good rollerman can make you look good!!