OK,
I found the 25% MAC and tried the balance at 25-28% CG This plane is VERY tail-hevy at that spot. At around 30%(slightly fore of the spar tube) it is still tail-heavy, but less. If I need nose weight, where would be a good place to put it? I have a large plywood engine mounting block under the cowl, should I add lead to the top surface? Add a small (2 oz.) Heavy Spinner, and aluminum Spinner after that? Where do most of ya'all add your nose-weight?