I was all packed and ready to go to the Flatiron for some rebolting right before the shit hit the fan last Spring.
Kat and I trekked up there this past week to get some of that work done.
I started with the mid anchor at the top of The Regular Route. I had a choice of either adding 3 foot lengths of chain to each side or relocating one of the bolts.
I chose the latter. The two existing bolts were about 2 1/2 feet apart - both with flat ring hangers, in okay but not great rock.
They were on a flat surface behind a significant edge. The rope pull was extremely difficult - unless you walked 50 feet out from the base of the formation. The existing bolts were carbon steel 5 piece with stainless hangers. I have a stash of Fixe carbon hangers, so I swapped the hanger on the right bolt and added a screwlink and a 9 link chain. I drilled a new hole for the ring hanger in excellent rock - to equalize the rig and get it over the edge. Here is the new configuration with an X in the spot where the old left bolt was placed. I patched that hole and another failed hole right next to it.

Next I dropped into the Regular Route and replaced the only remaining old bolt (the first one). I remember looking at this old bolt when I did my first ever lead climb on December 23rd, 2011. I didn't have a clue about bolts back then. I just saw that it was rusty and it made me wary. The old bolt is one of the strangest I've seen at Pinnacles. It was a split shaft with slots milled down the sides. The cut washer on it had little tabs that aligned it in the slots. It had one of those Italy hangers with red primer paint. Here is the old bolt and hanger (nut was barely flush with the stud).

All the bolts on the route are good now. Here is the new bolt.

I had one bolt left so I replaced the first bolt on Lost Fortune. The old bolt was a split shaft with stainless SMC hanger, crooked bolt, improperly aligned hanger, cratered hole and minimally surfaced. This bolt came out really easily with the puller tool.

Same bolt with the hanger removed. Note how the threads end - indicating a split shaft. The bolt was barely in deep enough to allow proper tightening of the hanger.

and the replacement
More later today...