I can get my Uproar to hover OK. But after it starts to fall to a side, the rudder ain't powerful enough to keep it up and it falls. Mines got a 1/2" larger rudder. A friend did a 1.5" larger rudder and still has the same problem. You'll need to build the elevator halves to allow for more rudder deflection as well... And a larger fuselage (as per the Dazzler, but bigger since that model doesn't have adequate knife performance as well)... I've got another buddy who has 2 Magics, and while great hoverers, they also suck at knife manuveurs. At the end of the day, you might as well buy a Morris the Knife ARF and save the hassle. You won't find a better hoverer, knife edger, or flat spinner...