I noticed a little play in my handlebars if I lifted them up and down... after looking around I noticed it wasn't the handlebars at all but instead everything that goes down into my headtube had a little play in it and would noticably shift when I lifted my handlebars up and down.

Also, each time I do this a little line of grease appears on the rounded areas of the headset(rounded meaning under the top area with the nuts and where there is a slightly rounded ring that goes around the entire headset).

LBS time or can I do this, and how?

Thanks!!