It's not like they have a real clue at HD or any retail store anyway. Most of the people who work there are not knowledgeable enough to make a living in the trades. They either become building inspectors or work at HD or Loweâ??s or Ace sorting nuts and bolts all day. Not always the cream of the crop (if you know what I mean). Some are great they are retired so look for the old farts, the chances of them knowing anything of value is greater then some kid. There are always exceptions but not many.