Nice job Hellflyer
Sorry for not writing sooner, I just noticed your post today.
I have had some clues that the area you refer to is somewhat weak and can do with reinforcement. Mine never broke off, but I've seen a small crack appear after about 100 flights. I wasn't sure if this was a problem in the design or just a result of the abuse this plane went through (It had its share of bumps and bruises).
Now I know and will reinforce the area when I build another one.
It's a fun plane to fly and at times, some of the experienced flyers would borrow the Tx and would not want to give it back for a while