I replaced all of mine - awesome upgrade. I took measurements and spent time on the site. Called and they were able to give me exact size replacements (size wise & foot print) for what was on my boat. To do them right they will need to be bedded. I did not the first time around and you get some rust if you don't. Good Luck!!!!
Sounds like a lot of work with a strong chance of screwing something up. I’ll leave as they are. I’ve broken a couple of hatch wires and it’s difficult to find replacements. Thx