Netters; After one has "done the math", and you think you have the weight and balance close, apply a practical test to the situation. Taxi on to a long runway. Power up and go roaring down the runway. Gently apply forward pressure on the stick in order to get the tail up. Once the tail is up, apply gentle back pressure until you get the mains off. Fly about 5 feet above the runway for a short distance and make a subjective judgement concerning the correctness of your balance. If you can fly comfortably in ground effect, you will probably be OK to fly your KR out of ground effect. You may want to do this several times before you commit yourself to a trip "around the patch". Caution is the key. Don't rush into flight after having spent several years building another great KR!
RV