Hi,
Im just about to update (review after a few thousand klms) my original post after fitting Race tec (RT) front and Nitron R3 rear, when I read this post. Im 120kg. Frankly I consider the ST suspension very poor in standard guise, particularly the rear - well for my weight anyway. I do like to push along pretty quick at times, particularly around corners - so I need it to perform 1 and 2 up. Maybe if you were 60-70kg you may get away with it standard. If your a bit heaver, the bike simply rests on the 63mm air gap as the under rated spring cant cope.
For me - RT 1200 constant rate springs gave the correct sag and ground clearance in corners. Has 13 mm preload, 5 wt oil, 130 mm air gap, with the standard sports RT gold valve (4 large shims each leg). For me works a real treat. You can see the forks working hard, rather the front end riding over undulations.
For what its worth..