I recently put up some kitchen wall cabinets. When screwing in the cabinets one of the studs was more difficult to screw into. I pre-drilled pilot holes for the studs and everything went OK besides one.
The one screw had a high pitch squeal when I tried to screw it in and became difficult to turn, I eventually drilled a little bit bigger of a pilot hole and it went in easier. Is this just hard wood or maybe I hit a knot? Does this sometimes happen?