I had to trace all though as offset does not work so well as you always get a box. But select trace and play with high pass and threshold and then delete some nodes and they are good to go. I have found that high pass around 700 - 750 and then threshold from 45- 55 and choosing trace edges gives a pretty good result and some tweaking of course.
I still have to play with embossing and punching in knk. Got to call Sandy for that. So used to Sandy helping me out that I am afraid to go solo on knk