Well yesterday I hit my local tracks but also linked it with a gravel track that has rocks and a few mud sections. This time I dropped pressure 26/26. There was some improvement but I think theres more grip to be found. Next time I'll try 24/24. I think what isn't helping is the centre tread pattern with the thicker parts of tread that come into play as the tyre wears. I'll try to get a picture posted to show all this better.