The only idea I have is to create a template from the PFA137 and drill new holes on the PFA130e face-plate on the exact locations (as the PFA137) to see if that can work - you do sacrifice weatherproofing capabilities though due to the compromise to the gasket seal. However, you can always perhaps caulk sealant around that. For a plate that thin, not sure how feasible it would be to create a couple of threads though.