New Post: More then 200 tweets in a timeline

Trying to figure out how to retrieve more then 200 tweets from a users timeline,

I've tried such ways as:
var timelineParameter = Timeline.CreateUserTimelineRequestParameter(ssUid);

                                timelineParameter.ExcludeReplies = true;
                                timelineParameter.MaximumNumberOfTweetsToRetrieve = 1000;

var tweets = user.GetUserTimeline(timelineParameter);

and

Timeline.GetUserTimeline(User, 3200)

But only get 200 results, I've tried to pull the JSON directly, which I'm not sure how many are being returned as I can't figure out a way to convert the JSON back into a ITWEET list.

Any help would be appreciated, Ideally I'd want to be able to pull a entire timeline or later on just tweets after a certain date (IE: if never checked the entire (3200 max) timeline, otherwise all tweets after a certain date).

Thanks in advance