Sounds strange, how tight are the brakes, I've almost always kept the smaller kites on the middle factory setting and had no problems. They're
designed to have the brakes knock them out of the sky, so you've got to either leave the brakes slack or be careful how much you use on the brake
turns.
To run them on the high lift setting they have to be at the higher end of the windrange, if you run the agressive setting in low winds the kite will
stall a fair bit. Same goes the other way around, if you run the low power settings you may find that the kite ends up spending a lot of time right at
the edge of the window and not making much power, If the brakes are slack I'd try moving more towards the middle settings,
Let me know how it goes
Sysmic S1 Buggy.
0.7m / 1.4m / 2.0m PKD Buster I
4.4m PKD Buster
10m JoJo RM+
6m Flysurfer Outlaw
12m Ozone Access