There were quite a few pirated "Wild Hare" models. It started with the 35% Giles, which seems to still have one or two popping up "new in the box" from time to time, most without instructions.

There's much you can do to reduce the weight of your Extra. It will fly much better for doing so. The first would be as Tom noted, removing one of the rudder servos and changing to a different flight battery. The plane is more than well driven at the rudder with a single 200 oz. in. metal geared servo. The choke servo I won't go into since so many prefer the "safety" aspect of having one. Move the c/g aft about 1/2" from where it is now. She'll handle a lot better and land slower with more control.