Severne CR 7.7 camber rotation

[Hookipa18]

Using the Severne CR I 7.7 with a 460 Red Line mast and I'm not happy with the camber rotation. I use a lot of downhaul as the sail looks flat and I have loose leech till the boom.

- Is it possible that it is too much downhaul?
- Can you adjust the batten tension (or does that not help)

Or is it something you have to live with with the new wide sleeve sails?

Thanks
Rob