Case Red Imps were scaled with early colored Bakelite. In order to produce colors, the carbon (black) was omitted in the process. This type of scale is prone to shrinkage as well as warpage. They can be straightened somewhat successfully using warm to hot water, popsicle sticks and small spring clamps. The shrinkage is tough. You can sand the wedge down to the contour of the scales and polish. A tiny file or hacksaw blade will work the wedge down inside the scales to allow clearance if things are not too bad. Otherwise, time to rescale!