I've got a 4" long hump in the center of my dashboard near the defrost vent and wanted to know the best way to repair it. the top vinyl/foam is separated from the dash structure. it's kinda hard to get at since the area is near where the windshield meets the dashboard. was thinking of using some sort of glue but didn't want to make it look worse. I was also thinking of using those dash mats and cover up the problem but didn't care for that look. it there a product that I could spray and inject through the small opening where the dash is lifting up? any recommendations? thanks.