OAuth authorization and PUT requests

Hello, I'm implementing a client for the OSM api. The authorization is working fine with osm-oauth (https://github.com/osmlab/osm-auth) and I can make all the GET requests, but all PUT or DELETE requests fail with a '401 Unauthorized' message, although the request headers are identical (or is this the problem?).

If anybody can give me a working example of a PUT request I would be very thankful.