I started buying all RCBS dies because I was told they have a lifetime warranty on all their products. I still like my Lee dies but there warranty is 2 years. I bought a set of vernier calipers about a year ago and for some reason my needle doesn't point North as I call it anymore. Still measure ok when I compare to digital set I own but I'm OCD an want them like they were. I don't have the receipt anymore so not sure if they would take them back. I don't know what happened as they have never been dropped or abused. i can't find anyway to get the needle back straight up to keep 0 on top. Any ideas if it's something I can do to fix or just buy another set.