I'm using 19/32 T1-11 to side a shed I'm building and was thinking of using it for the 3'-6' wide door as well. I noticed though that some of the sheets were bowed before they were nailed up and I was wondering if this is going to cause me a problem with the door. Will 1x4 trim around the perimeter and maybe some 'X' pattern as well using the 1x4 stiffen it up so that it will stay flat? Would this trim need to be or should it be on both sides? Thanks.