So, what do we do with your Paintless Dent Repair Estimate Worksheet? We plug that information into our PDR Hail Matrix, of course. While it looks intimidating, at first, the Hail Matrix breaks down everything into size, location and number of dents. CR is short for conventional repair. When the damage exceeds the capability of PDR or it just makes more sense, that particular panel will be replaced and repainted in our body shop.