I've got pretty much the same - could be the damper, and hopefully it is in your case...
In mine, it's got a new damper, drag link, track rod, and suspension ball joints, but it still feels 'floaty'
I've heard that both the rubber coupling on the lower steering column, or the universal joint can get play in them over time - and also the splines in the steering column (that do the telescopic bit) can wear and give vagueness. Also wear/play in the steering box, but this is somewhat adjustable via the screw on top.
Steering damper is the easiest place to start though - especially as you have one already!