I bought 12-foot-long 5/4 x 6 in pressure-treated pine deck board from Home Depot. Not until I laid them down did I notice that the boards' width tapers significantly toward the ends of each board. See the picture below. My deck is finished (as of last night—yay!), but just so I know for next time: is this kind of variation in width something I have to expect? Or was I just unlucky with what Home Depot had this week? Or can I avoid this buy shopping elsewhere?