So I took my 13 out today in some light wind a little gusty on and off. It was the crazy day to say the least. I had the kite invert on me at least 5-6 times. It would usually happen as the kite was at the edge of the window and the lull would come, It would just flag out and fall on its back. But then is when the fun would start, It would sometime come off the water and start flying on its back. A couple times it literally inverted on it self and powered up backwards fly up and than fell back down leading edge on the water facing me. It wasn't gnarly or anything but it was embarrassing. I could relaunch it every time but the first time as the lines got tangled up when the kite rolled over a couple times.
I even added more air to the LE to make sure that it doesn't happen again in the middle of the session but it didn't help.
When I came back home I checked my line lengths and realized that fronts stretched by an Inch so I reconfigured them as per instructions.... I cannot wait for next time to take it out again, hopefully without any crazy inverted episodes.