Well, be that as it may, there have been many DBs successfully flown at SPA meets over the past few years with few complaints. I have over 225 flights on mine and many 1st place finishes with it in Senior Expert. It is not unusual to see 5-7 of these at a contest. So, at least some folks are having good fortune with theirs. The whole issue is rather perplexing since I have seen so many examples of this ARF be flown quite successfully.
Jeff