I just bought a used Windtools Pro KS 9m. It looks to be in good shape, no rips or holes. I tried to fly it last weekend for the first time and had some big problems. First off it never actually flew. The trailing edge would come of the ground and the kite flip over, meaning the back of the kite would now be facing me and the trailing edge would start lifting the kite up. It didn't flip left over right or any of the ways that a kite normally flips. If I pulled the brake likes a little the kite would fly up a bit but the back was still facing me and the trailing edge was leading. There was plenty of wind and I don't think thats a factor. Has anyone ever heard of something like this. I don't know where to begin to correct this. Any advice would be great.

kinda sounds like the brake lines and power lines were crossed but im sure ya checked that?
Welcome to the forums. ya came to the right place for info im still new but the people here are full of info.

Try flying it as a 2 line and see how it reacts. If it is still wonky then hold it above your head flying on just the bridle knots and observe up close what is out of wac.
If it flies O.K. on 2 lines set the brakes ULTRA loose and work in from there .

I had a kite that a fellow had tinkered with and he had sort of separated the a from the b,c, lines ? presumably to adjust the angle of attack I could only find one setting that the kite flew with ??

Thanks guys. I will try the 2 line idea tonight.