x_auth_access_type in request token method


I have an implementation of the twitter api sign in. The oauth dance works perfectly. With that said, when I add the “x_auth_access_type” param to the “request_token” method I get a 401 error with “Failed to validate oauth signature and token”. I get this error only when this param is part of the request. My app is Read/Write, I just want to limit base users to read only. So where in the request should I put this param? QueryString; Header/Signature; Body etc.?


Wow nobody?
Can anybody atleast point me in the right direction?