At SAAC 27 was visiting with a long time (retired) Shelby employee...thing his name was referred to as “tweety”. He was a painter I think. We were discussing hood bows on a ‘67 GT500 I was restoring at the time..#0195. Anyway, he said that was always a problem because of the springs and to remove the bow, remove the springs, place a blanket on the hood and then put sand bags from Home Depot on each edge for 3-5 days. That worked! Sold the car later so don’t know if it held up but it was ok for at least two months!