I have a deck that was built August of last year. Yesterday when I was cleaning the yard, I noticed cracks on the deck post. The crack is on all of the sides of the post, a minimum of 0.5 inch deep and maximum is 1.5 inches. The size of the post is 6x6, 2 of are bending(I think). What's the allowable crack size for a 6x6 post? Thanks.