A:AnswerNot sure what you mean by creases. If your bolt is so tight that it is warping the tv that is bad. They should only be snug only. If you mean there is a gap then switch bolts or use extra spacers between the mount and the tv to fill the gap.
A:AnswerSeems like this would be fine. The added bolts just give extra peace of mind that your tv won't fall off the wall in the middle of the night...