How do you all seem to get your rounds precisely the same size? I see photos on here and guys seem to cut the rounds exactly the same. Do you measure it out or mark before you cut? All my stuff varies - usually because I cut to avoid knots and such. They all run 12 to 16 inches. Onces split and stacked - my stuff just doesn't look a polished. I guess it doesn't matter how it looks - but how it burns. Do you all use those length markers off the saw?