I will not accept boxes that have not been cut true and square and to the
proper dimensions. Splits and knots and surface defects can all be worked
around.
The old adage "putty, tape, and paint make a carpenter what he aint applies.
I tried some economy supers and the problem was in the dimensions and
squareness. If the manufacturer cannot measure and cut square he has made
kindling.
Fooled me once.