Having said that, I think that part of the problem has been my switch to Gesso as my primer. Since I started seriously painting figures and using primer I have used sprays. This time I used brush on Gesso (decent sprays are becoming difficult to come by in these parts - no GW retailer) and didn't water it down. I think that this may have obscured some of the detail and prevented the dip from doing its job with the faces. The figures themselves are quite stunning, and I don't think that there is anything wrong with the depth of detail on the sculpts. The next batch of Germans has been primed but the Gesso is much thinner, so we will have another go with them.