Cheers for the reply.
I've be flying flysurfer for about 10 years now and never had a issue like this.
The kite flys fine then for no reason at all the kite seems snap forward, the wingtips flare out and the kite then inverts on itself.
The kite is unflyable with the mixer set at level, so at the mo it's about -2cm on b and -4cm on c
But when measuring the main a-z lines they all seem shorter that spec'd on the line plan from the website.
I'm in a position that I cant sell this is kite as it's not flying right and I couldn't live with myself trying to palm this off on to someone so I have to get it sorted.
The kite has been back to flysurfer before for a repair and came back flying perfectly but it's now getting worse and worse.
If the guys at flysurfer read this, please help with some advice