Anybody know where I can source a replacement jack plate for a Genz Benz Shuttle cabinet? I don't mind if it's blank (would actually prefer that) but I don't want to modify the cabinet cutout and would like the screw holes to line up. They don't seem to be a standard size or screw placement. Outer dimensions are 4x5.5 and the screw holes are three on each side (top corner, middle, bottom corner). I can't find anything like it online.