I've got some kitchen cabinets that were hung using 4", course threaded, dry wall screwed. At every stud there is a screw at the top and bottom of the cabinet. Additionally, each cabinet is joined to the one on either side 3-6 3", dry-wall screws. I hope I'm explaining that correctly.
Anyway, after having/using the cabinets for years, without any problems, I read an article about how bad it is to use drywall screws for anything other than drywall. I was told by the guy at the Home Depot that my family is seconds away from death because it's a miracle they held at all; and that I need to replace them ASAP, with these 4" 'Gold Screws' he sold me.
I've replaced all of the 4" drywall screws with the gold screws. My question is about the drywall screws used to keep the face of the cabinets flush....they are only 3" drywall screws; but they've been covered with wood putty and sanded. The color isn't a perfect match, so I know where they are. Also, the 4" screws I bought are too long, so I'd have to head back to the store and buy more. Is this necessary? Do I risk life and limb by not removing those screws and replacing them with the gold ones?