Stripping western blots

[Ann Sutherland]

What is the best way to strip Western blots to preserve protein for 
the next round of antibody?  We are doing Western blots of mouse 
embryos, so we have very little protein to begin with, and have been 
having trouble re-probing.  Either the stripping method isn't strong 
enough to remove the first antibody, or it removes everything.  We 
are using nitrocellulose membrane, does PVDF work better?
Thanks,
Ann