The bolts were quite thrilling. There is a pretty good layer of rust and spinners. 20-25 bolts should be replaced. There is a mix of 1/4", 3/8" stud or split shaft, and a good amount of Star Drives. F4's report form before was right on. 8-9 to replace on pitch 1, 6 to 8 on pitch two if every other or third is replaced on the ladder. Two on pitch three, and 4 on pitch 4. Plus 1-2 at each anchor and possibly a new anchor at the top. That's my vision, but that is up for debate.