Skycarven had that exact same problem earlier today, ended up cutting it off at the main gear after scratching the hell out of it with a pair of pliers. Waisted six bucks because it ends up it wasn't the shaft that was causing the wabbling. I have no advice for that, I would just say if it flys fairly fine just put it back together. When I put the new shaft on I had to sand it down because it wouldn't even slide into the gear.

It wablles flom side to side, and the tail rotor is not responding to any trim. Could this be an eboard. If it is not I am going to think about selling. It is a good heli but I have to keep putting money that I don't have into it. MIght go for a plane, the controls and repairs seem a lot more strait forward to fix.

I might be a little irational right now because I spent wo ful days trying to fix the stupidest crash with no success. At the point that if it doesn't fly with minor corrections the next time I go outside I am going to throw it at the wall.

Wish everyone luck with their heli because I am not having it with mine