Probably old news to you, but the solution for a bent stanchion that we discussed in the above thread might be a reasonable answer...
There is bound to be a good SS fab shop somewhere near you, and then you will have your refurbed stanchion back with no worries about it matching the others.
Added lead: Rail Makers has done stanchions for a lot of boats. http://www.railmakers.com/
You might want to check with them.