I know what you're talking about, I had a couple of little marks like that one my DOVO. I suspect from poor stropping whilst I was learning..! I've been using the straight exclusively now for a couple of months so I've got my stropping pretty good now..!

I got some Shaptons the other day and I touched it up on that. About half a dozen strokes on the 16k was all it took. I did 15 passes on a denim strop with 0.5 diamond spray afterwards, then strop on canvas with chalk (40 strokes), then on to the leather for 50 strokes and it was good to go!

You could also use a barber hone or some sort of pasted strop with either CrOx or Diamond Spray as well. I saw a post a while back now where someone mentioned using 1, then 0.5 and then 0.25 diamond spray on a paddle strop as a touch up method, or as a finish after honing.