I have a question I really need to have answered asap if possible. We are sheathing a garage roof using standard 4' x 8' sheets, however our roof is 30' deep with 2' overhangs on each end, thus making it 34'. My question is where is the best place to cut our sheathing to avoid waste and ending up with short 2' pieces on the end that will not provide much support? Please help. Thank you.