Do you have a code example you can post that demonstrates the
problem? That communicates what you're doing for easier than trying
to explain with words. I can answer your question better once I see
code.
Also, checkout the request matching cuke[1]. It explains how VCR's
request matching facility works with examples.
Myron
http://relishapp.com/myronmarston/vcr/dir/cassettes/request-matching