I pinged one of the french doors with the weedeater on the patio. It's been sitting there all crackled for a couple months now. I guess I need to take the broken stuff out. But can the glass be replaced DIY or are these double paned things even possible to do yourself? It's not terribly old, maybe less than 10 yrs. Manufacturer etc not apparent as far as I can tell. Would like both doors to match again but don't want to call the pros in and end up paying $600 or something! Any ideas?