contempo,

Now if you just change the shape of the horizontal-stab/elevator and wingtips you can call this the "U-Can-Flip 3D"...

Seriously though, I have been using the stock tank (mounted on the CG... look back in this thread for pictures) with a YS 91 and have not had a problem (yet... knocking on wood). I haven't done this, but a little silicon-sealer around the neck is said to help avoid leaks...