Are you using the ozone race lines with 100kg for back and 200 kg for front?
Ozone has discontinued the 100kg/200kg race lines. All their race lines are now 200kg rears and 300kg fronts sold in sets of matched length 4 line sets 12,13,15,16,17, 19, 20, 21, 23, 25, 27, 30, 32, 50M lengths.
These lines are not much larger in diameter than the previous version in 100/200 as they are made with the newer, higher modulus dyneema line that Ozone switched too several months ago.
They make a big difference for light wind kiting, but they need to be examined regularly for wear, especially the rears and I'd definitely not recommend to ride with twists in the lines ( they won't break, but riding with twists will accelerate wearing).