Stealth.....Not sure I agree with your assessment. I have an Arizona arrow straightner that I made a 32" channel for. Now, when I do my straightness check on my arrows (CXL 250) the high or low side (bend), as checked with the dial indicator, is not in relation to the bearing test weak side (plane, I like that term better too). So, that tells me that it is the weak spine plane reading that I'm getting.