so i added 225ml of medium silkolene fork oil and the damping seems ok, i may have to use the standard springs and experiment with fork oil if the ride appears to be too harsh, there's no pre-load on the forks with them having no weight on them, the springs, [which ever ones i use], may need a little more pre-load due to the light weight of the bike, it's all down to when i get it out on the track.