So I've had the QR-1 since Christmas. Since then I've had two motors go out. Sent it back to Traxxas for repair. Got it back after a while. Two motors out again! The bottom of the motors seemed to be cracked after doing the armature adjustment. Are they that weak that they'll crack just from the pliers? The wires look slightly crushed as well. I'm getting pretty frustrated with this this thing. Anyone else? From what I've done with it so far, it seems like it flies great for a couple minutes and is just a piece of junk the rest of the time. Any thoughts?