Convert 9 speeed Campagnolo Ergo Levers to 10 Speed
It is not too difficult to rebuild campy leavers - although a extra set of hands can be handy for one of the steps where you need to hold a spring in position (there is a trick to it). You can get the parts if you ask around local shops or online and you can convert from 8 to 9 to 10 speed provided the internals are the same type - you should be OK as you have the 9 speed ones, 10 speed and up may different. The G springs were about $10 when I last braught a set and I have seen the cam/ratchet part online for arount $50 - but that was a while ago, and in Australia.

Look up the book "zin and the art of road bike maintaince" or rebuilding ergoleavers section on http://www.campyonly.com/ (right at the bottom). On the campagnolo website there are manuals that include exploaded diagrams of all their components and part numbers, and when I last looked had the ergo leavers had listed the part numbers you need to change the number of speeds.