Has anyone had issues with the calculations being inaccurate for segment rings using Woodturner Pro? I am having real issues. I am using 1/16 accuracy. My ring is 16 segments. Board width 7/8", segment edge length 1", Inside edge 5/8". all dimensions are spot on. Using a wedgie sled so the ring is perfect. The calculations shown are Outside D=4 3/4" Inside D=3". the actual is 5 3/16" OD and 3 1/2" ID. This is happening on various rings, some are OK others are not. Does anyone have any answers to this. Very annoying and hard to design accurately.