Ken,
A few of my chain plates had rust stains, so I assumed they were not going to look great when I pulled them. Since I was replacing the rigging, I thought it would be best to just replace everything. I'm trying to limit the amount of time the rig is out of the boat, so I ordered all the parts before the rig was pulled including the chain plates. Garhauer turned the U bolts around in 2 weeks, so I could have just waited. 40 years was a long time on the originals, so I'm not too balled up about replacing them even though they didn't really need it.
Garhauer wanted the center to center, height above and below deck, and diameter measurements. I also provided the part number form Rig Rite and they ended up calling to discusses the project. He said that most are standard and they've made hundreds of them, but they still like to measure and, if possible, have an original part mailed to them. They all fit perfectly in the existing blocks, but I will have to cut apx. 1/2 off the bottom so they don't protrude into the headliner.
For the most part, I was able to work around the headliner, but the fitting in the head required me to remove the outboard trim and carefully work between the headliner and bottom of the deck. The other blocks were accessible through the existing slit or from the zipper. I did accidently pull the liner out of the trim by the starboard cap/int block, but I should be able to staple it under the wood trim piece.
Old u bolts:
View attachment 52165
The u bolts did need to be rebedded. Most my backing plates are in great shape, but there are 2 that have corrosion, and one will definitely need to be replaced. I'm guessing the water that caused the corrosion to both blocks actually came from port light leaks, not from the actual deck penetration.
Good Block:
View attachment 52162
Starboard Cap and int. that needs to be replaced:
View attachment 52163
I had Garhauer make new toggles to fit the u bolts. I think it was one of your posts about the difficulties of fitting toggles, that persuaded me to have this done. The u bolts are made from 1/2" diameter stock. I had the lowers drilled out to 1/2" pins to make sourcing the turnbuckle easier and have the eye fit in the toggle better. The intermediates are still 3/8" pins so there will be a small gap between the cheeks of the eye and the toggle. This is a pic of the 3/8 toggle. The 1/2" toggles are the exact same distance as the originals, but these are slightly different. I need to call Fisheris Supply today to make sure they account for the difference on the new intermediate stay.
View attachment 52164