I have been making a hexagon hive using a 12" Dewalt radial arm saw and having lots of degree accuracy problems. I did do a tuneup on the saw settings before starting. Twelve cuts with a half degree mistake make for big gaps. Made a lot of firewood trying to get the angles right. What methods could I use on the radial arm to get the degree settings correct? WoodCraft has better protractors and digital devices to hang from the blade, I could buy those for next time. Or do I need a newer sliding miter saw? Would that be more accurate?