I've got the same wobble problem with my CP Pro. It's brand new and the center spindle does not appear loose. I've replaced and recentered the flybar with no apparent affect. Like NEWBLADEPILOT, the wobble appears to start from above the main shaft. Just as a precaution though, I have tried two other new main shaft/gears in the heli (this after tech support from Horizon Hobby said they had had a problem with shipping "out-of flat" gears). Still no luck.

The wobble is there through the speed range and occurs with or without the main blades attached. The wobble is significant enough that the heli will vibrate across the floor irregardless of the transmitter control position.

I guess the next step is to rebuild the head - though I had hoped not to have to dig this far into a "RTF" unit. Kinda defeats the whole purpose. One of the main reasons I got an E-flight was an apparent attention to quality.

Any suggestions would be appreciated.