CSS clips  

Of all the CSS parts
it might be possible to have some fabricated at a metal works in your town. It's possible that some could be made for a fairly reasonable price.
Some of my clips that are in use look like non-originals (i.e. the screw bars do not have the grooves that the original ones have) but they are in use and work just fine.
Getting a pole or a pole stabilizer fabricated would be much more difficult and expensive.

Some are listed on ebay...
Some are listed on ebay right now.
These are being reproduced by a machinist in Iowa.
I think the seller name is mod_metal on ebay.
donsof
http://shop.ebay.com/mod_metal/m.html?_trksid=p4340.l2562