Dave,
Good job. Your DB looks great. I am glad to here it flies so well. I am just finishing a plans built Dirty Birdy of my own. I painted mine and am just putting in the radio gear. Mine came out very nose heavy. If I put the battery at the rear of the wing saddle area I will still need about 3 or 4 ounces in the tail. Can you explain exactly how you put the battery in the rear? Possibly a picture? This sounds like a good solution to my ballance problem.

Thanks
Jim