I rode a Axxis 267 (93 litres) for many years, and a few years changed to an Acid 86. I think that the Kodes and Acids are similar in the same sizes.
I had to adjust my sailing style as the fin would let go with my sailing style which was to use a lot of back foot pressure. This is not surprising as after all the Acids are wave boards. So now I dont use much pressure on my back foot, and put more pressure on my front foot, the board hardly ever spins out and if it does I can recover easily.
I actually miss the Axxis as I have sailed slalom boards a lot and like to sail off my back foot. I may look to change the Acid at some stage as I use it for bay blasting and dont really need a wave board.
Let us know how you go.....