its possible the springs are to heavy for your weight, if they are ktech springs in there the weight number will be stamped on the end of the springs. If they are infact to heavey for your weight, I have a stock set of springs I can sell you for a reasonable price (I have just upgraded my springs to ktech 9.5, I'm 14st)
You have the same issue that I have, but the first 3 things you should do are -
1. Set all the setting to default.
2. Then adjust the preload to set the static sag for your weight - which may be impossible if the springs are too heavy
3. Then lower the compression damping (adjusters on the bottom of the fork), one click on each fork at a time untill the harshness is reduced to a comfortable level.
If adjusting the comp.-damp make no different (as in its stiil harsh after that), then its time to change the fork oil. At this point you can either do what I have done and do a full strip and clean the forks (I am replacing all the usual items, bushes, seals, oil). Or if you dont want to go down the full strip route just empty the forks -
- flush with brake cleaner and refill with the correct amount of fresh oil - check the haynes or workshop manual for the exact instructions.
Then if after all that its still to bloody harsh then you/I will have to look going down the Maxton/ktech update where the damping internals are completely replaced.