using cohesion but keeping minimum distance apart with unitysteer

I apologise if this is a simple question but I have not found much information on the subject in here, the wiki or online.

So I have basically made a simple object which just wanders round the scene and I have some other follower objects which all use Steer To Follow the wanderer, however they also have Steer For Cohesion (which automatically adds Radar and Steer For Neighbour).

Now as you can see in the image below.

The objects tend to bunch up a bit at points, but ideally I want them to have some notion of local avoidance so they know not to bash into each other unless it is unavoidable. Now I have tried setting the min distance in the steer for neighbor group and the same with the steer for cohesion, I have also tried giving 3x the weight to the cohesion and 2x the weight to the neighbor (when compared to base weight of follow), but it doesnt seem to change the bunching up, I also noticed that the cohesion tends to get turned off at runtime for some reason.

So I was just hoping someone could shed some light on the topic as given it is all weight based it seems like a simple enough thing to factor in a weighting which will keep them at arms length. As the expected outcome would be rather than the units all staying bunched up or getting more bunched up as they set off to follow the object they also split up a bit while trying to find a course to follow.