There was an article in last month's Le Cycle magazine explaining exactly how to change the ratchet - which is apparently available from Campagnolo - on I believe the old Centaur lever. I'll try to dig the article out.
Since Centaur has always been 10-speed, I'd be interested to see that.
Also, back in the 2000-2006 time frame Centaur, Chorus and Record had the same shifting internals. There was nothing different about Centaur.
In 2007-8 Centaur went "escape", so I don't think that will help either.
There's sometimes a buggy.
How many drivers does a buggy have?
So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.http://www.youtube.com/watch?v=GekiIMh4ZkM