I agree with Brian on this Kensal ...but I should have been more clear I guess , and although it did pain you to some extent ,you are mostly correct they don't always just "swap out" but it's really not that major of an operation no more labour intensive and likely a little less so than dismantling and heating /bending the originals back into shape ...No Doubt someone like Bachelders has a boatload of leftovers in his shop ,Brian admittedly has 30 or so I have likely that or more ,in that case I would just match a set and swap them out .
I wasn't trying to belittle the work involved ,or cause any rolled eyes ...but I could of spent more time on my post .
My apology for that