After my crash I lost one of the brass weights and it was too late to go buy a new one but I did have blades. I taped up the body and threw on new blades but you can't test fly without the flybar so I straightened it out the best I could and put it on with just the rubber end pieces. It flew o.k. with just the rubber pieces but I have a very limited space to fly in my house so I couldn't really test it. I went to the hobby shop and bought wheel collars and a new fly bar. I cut the ends off of the old fly bar right at the bend in the end and put on the collars. With this configuration I was getting eratic behavior. I took it apart and balanced the blades and the fly bar and then put it back on, big difference! It takes a little more to keep her steady but I can't wait for the weather to clear so I can take her out for a real test. I'll let you know the results and I will try the blade thing also. I would like to try a stiffer/more airfoil shaped blade cause the stock blades are basically fan blades.