You need to re-zero your scale. Make sure it is sitting absolutely level. Then set your poises all on zero. If the pointer is now pointing to a spot below the centering line on the scale body, you need to add weight to that space under the pan until it is exactly lined up. When that is done. tighten the screw and you should be done. Nice to check it after with a set of guaranteed weights, but in lieu of that, if you have a couple of different weights of Nosler ballistic tips or some match bullets, they will give you an idea of how accurate your scale is now. If you don't feel confident doing it this way, send it back to RCBS. They will fix it for you, probably free. Regards, Eagleye.