Hi, I get a whole bunch of extruded Al plates. Each of them is about 7" long by 3" wide and 0.08" in thickness. They are extruded parts and cut into 7" long on each pc. However they are coming out wrapped, not substantial but quite a amount that is out of our tolerance. They are wrapped close to half mm on the 3" side and even worse (I guess 1mm~2mm) on the 7" side. I wonder if this warp is introduced during the extrusion, or during cutting. I looked at typical 8020 parts, they look perfectly flat. Thanks!