Originally Posted by
RoboIsGod
I'd say as long as you are able to properly hold the derailleur in place while you get the chain length right, you shouldn't run into a problem.
Wouldn't count on it. C-Record RD's with broken top pivots (only the examples with sprung upper pivots - before first-gen production ceased, Campagnolo already changed to a B-screw) usually ride up into the bottom of the chainstay, damaging the pulley cage.
-Kurt