I have a two pairs of nice 80's vintage single pivot brake calipers (Gran Compe Royal Compe and Shimano 600) but neither pair has a good set of barrel adjusters. I looked around here, and Google, and it seems the only replacement is a set from Campagnolo at $25 each! At $50 for a pair of them I can buy some pretty decent brakes - are these brakes really pretty much worthless without these adjusters? I do have one set of adjusters, but the threads are beat up on them and they won't 'adjust' anymore.