So what are my options? I'm not sure if I can start undoing things without them requiring a service afterwards, and I'm going away next week in the car, and I figured you guys probably know HSD's better than anyone else. I think I had set it to minimum when I broke it, so at least it won't be too harsh as I've set the one at the other side to the same for now, but I do prefer them to be around 6 or 7 from soft.
It looks like there is nothing to turn with a screwdriver or allen key up the hole, looks very clean.
Should I contact HSD to service them when I get back and replace it, or can I adjust them somehow? The dampers probably don't need servicing really, as they've only covered about 5k and not done anything at all this last 2 years while I've been busy doing other things, they've been back in their box for a year or so in this time.