I'm in the process of making a single sided box call. I don't have a template or blueprint to follow. I made it from what I visioned it to look like. I have my striking wall at about 1/8" - 3/16" thick. I hollowed out the middle for the sound chamber and the rest is flat. I drilled my hole in the top left corner of the box. My question is, do I need to have the paddle sit higher than the striking wall? If so, should I just glue a piece of wood into place, or how exactly is the paddle supposed to sit on a single sided box? Any help would be greatly appreciated.