Excellent Lou!
Thanks so much!!!
This is really useful.
The thing is that I used 6mm carbon tube for the LE in a single piece instead of using two pieces of conical tube.
From Hugo's description I might be getting too much flexion... Could that be?
Then changing the bridle might be the solution.
What I have experienced up until now is that the kite in low wind tends to bounce forward and backward when flying slowly up.Also it tends to oversteer and in axels it does them too fast and sloppy.
And when I try to do half axels or other tricks it tends to go into a turtle in a very stubborn way...
So I will try Chilese's suggestion and observe what happens.
I will also try the different bridle adjustments you published.
I really hope I get a good flying kite and recover my motivation on it!

I have normal pultruded rods as LE in my Quartz as well, and like it a lot. Tried p200 and didn't like it AT ALL!
I guess there something not quite right with your bridle settings. It should have larger then normal turning radius with the original bridle setting though. I believe i've shortened the outhauls by 1 cm and tend to have it set quite heavily. Still it performs very well even in low winds. My Le Quartz has rollbars and 20 grams in the tail.
VF entry with my quartz in very little wind: