Recently i noticed that I can go better upwind with my BRM Maliko v1 5.1 than my Ka'a 4.2. I have modified the lines of the Maliko just like BRM recommends. What I also noticed is that the shape of the Ka'a distorts quite easily during gusts. In the middle of the leading edge it forms a dent. That doesn't happen at all with my Maliko in gusts. I suspect that the distortion is bad for the upwind performance. Is there something wrong with my Ka'a or does a modified Maliko v1 just have better upwind performance? Are there any modifications for the Ka'a like with the Maliko?