The problem with this isn't the new, it's the old. I live in a house that's almost 150 years old and _nothing_ is standard. I tried to hang a mirror on a wall y

The problem with this isn't the new, it's the old. I live in a house that's almost 150 years old and _nothing_ is standard. I tried to hang a mirror on a wall yesterday, and turns out the wall isn't plumb - what should have been a 30 minute job turned into half a day of fixing up and making good 4 holes in the wall and shaving back the plaster to mount the bracket flush.