I have a feeling this is not right. I just got a hornady neck turning kit and the cutting blade is not parallel to the case neck, so when I'm finished cutting, my case neck is thinner at the case mouth than it is near the shoulder by about .005-.006! A turned 6.5CM case measures .292 near the case mouth and .297 towards the shoulder. I tried both cutting tips that came with the kit. Both cut the same way. I think the cutting body's mandrel and cutting blade are not at the appropriate angle to each other. Or is this common?