Created Unassigned: How to use application authentication [2573]

Hi

I have set up my application with twitter and i used TweetInvi to connect to twitter. Everything works just fine, but the rate limit for Search is 180 while i expect it to be 450.

Below is how i authenticate
TwitterCredentials.SetCredentials(userAccessToken, userAccessSecret, consumerKey, consumerSecret);

var rateLimits = RateLimit.GetCurrentCredentialsRateLimits();

rateLimits.SearchTweetsLimit.Limit is giving 180.

I am using tweetinvi version 0.9.4.1.

Is this how i should use the authentication mechanism to activate application authentication? Can you please help me figure out why the user level rate limit is applied even though i am using an application level key.

BTW Fantastic API. Thanks so much for making it available for every one to use.

Thanks
S.