And it wasn't a total success.  I didn't damage the thing, but I had a tankful of chaos before it mercifully ran out.  The TeeDee will be enough power once it gets balanced out.

I assembled it with the stock metal engine mounts and a TeeDee .049.  Obviously, the creator had a heavier engine in mind. 

But relief is on the way.  An old school maple & plywood engine mount is in the shop.  As the weigh check shows, it's both longer and heavier.

Another point:
This fine model came with leadout tubes much too tight to the wires.  I had to replace them with loose-fitting eyelets.

The fix is done and the next training day is May 14th.   The weight is "up" to 8.2.

A little CNC work on some 6061 and the mission is (hopefully) accomplished.  If this isn't enough of an extension, at least I have a longer lever to hang the lead on.

The controls were already dumbed-down so much there was hardly any left to steer the plane.  I wish I could get Viko to us 3" (or bigger) bellcranks in their products.

Just kidding about the CNC 6061.  It's wood with silver HobbyPoxy.