Thanks for your reply,
So is there no way to improve this surface between the support material and the outer layer?
I have tried slowing the print speed of the outer layer, also changing the heat of the nozzle so that the plastic is extruded at a lower temperature and less likely to droop, along with changing the overlap of the extrusion.
I thought that some of these may improve the quality of the layer.
Any other thoughts on this?