?? too much outhaul maybe?

Not really heard of this happening before

If the cams are removable via zips, some cams need to be inserted the right way up, and take the mast bend and battern angle into account - so maybe the cam is upside down? Do they feel like they are getting stuck and won't rotate when you pop the sail? Maybe if the cams are too tight on the mast, the battern is make an s shape and flicking them off the mast as you go to pop it.
I bought a KA sail 5.8 metre Predator a while back. Everyone asked "why did u buy that rubbish", and after I used it a few times I have to agree with them. They seem to be quite strong but seem to have awefull performance. I figure what's the point in having a strong sail if you cant get planning. They don't seem to have a very good reputation which is unfortunate because they are aussie made.
Ultimately, you can't got past the 'Big 3' for performance and sailability. NeilP, Gaastra, and North.
Justan