I live in Texas. We have a wood-framed house on blocks. Because of the house settling over the years, we are now unable to lock any of the doors. What can we do? We can't make the holes any larger. Sometimes, after a long, soaking rain, a door or two may fall back in line but, after a dry spell, it just gets out of whack again. Is there anyway to secure these doors that would not be impacted by settling? Thank you.