Hip Roof Repair Plan

A 2600 sq. ft. Hip roof has a crack in the framework inside the attic . We currently have storm damaged shingles and want to shop for a new metal roof and want to know if our roof framing needs repair because we had a report of a cracked framing member when we bought. The house was built in 1965 and has one small coat closet entrance with 18 in insulation without crawlway. The crack is at the end of the building that the access is. We want a good strucual advise before steel roof. The building is a duplex that is owner occupied and is one story on three quarters with basement. There are a few low spots on the roof that the purchase inspection called poorly crowned rafters. Tell me what needs doing.