My HZ Champ was severely out of trim when I received it. It required some wire bending to get the control surfaces to line up properly just to begin trimming it out. It eventually got there, but you must be patient. Some things they don't tell you in the manual: 1) turn on the transmitter first, then plug in the flight battery if you don't want to rebind the xmtr-rcvr every time. 2) Also, every time the XMTR is turned on it defaults to High Rate mode. You must go through the steps to get Low Rate if that's what you want, every time the XMTR is turned on. 3) the battery must be all the way forward to get the CG just right. I made the mistake of having the battery slightly rearward on one flight and could hardly control the model.

So far the model has survived and flies fairly well, once everything is set-up properly.