Kitchen drawer back rail bracket

The back braces/brackets for the drawer rail have broken and I am having difficulty finding replacements that are large enough. When I attempt to use the ones I can find in the local stores, the rail keeps popping out. I considered simply replacing the rail to match the bracket size, but the replacement rails are so narrow, I would need to place my screw hole directly in where two pieces of wood meet. The opening on the broken bracket appears to be 1" x 6/16 deep. Would Swisscom have anything that would be large enough? I think part 32-119 (Grass Adapter Bracket Pair) may be large enough but I am not sure. Thanks for any assistance you can provide.