Looks like I was wrong about the forest reindeer, thanks for the information. I wonder if quality affects it and forest reindeer is on the edge of acceptable? It has been a long time since I tried a forest reindeer so maybe I got a harsh or ragged skin and didn't realise I needed to do better.
Do you remember what quality the skin was when you skinned it? Alternatively, what month of the year is it? Winter furs are thicker, warmer, more valuable.