The bracket that attaches the pickup to the harp is VERY long and VERY thin metal. He bends the bundle. Measurements when moving the drum down to a specific size versus moving the drum up to a specific size differ by >0.25 inches. Useless. I was able to glue the block behind the mount on the edge of the harp. I didn't have to modify the part to make it work. Obviously this was all an afterthought with almost no thought to it.