Hey all. I bought some skis for my KFIV and plan on mounting them soon. Do I need to do a new W&B? They mount directly below the axles. They are Summit Aircraft skis. I figured I can just add the weight of the skis to the same arm distance as the gear. There is a small wheel at the aft tail of the ski but the weight is minimal. I do not have a ski on the tail wheel. Thoughts? Thanks.