Generic case for ta-086 mainboard

I have the components to build a psp1000. The mainboard is a ta-086. I purchased an aftermarket generic 3rd party shell for it. The problem is that although the ta-086 fits in the shell just fine the umd button on the board does not protrude out far enough so that in gets depressed by the umd cage assembly.

Does anyone know of a generic psp1000 shell that will work with the ta-086 mainboard? I know I can just install CFW on it but would still like to be able to have the umd option available.