Appreciate the speedy response. Not sure why the hobby shop didn't inform me of this. I do recall a pro racer at the track mentioning or asking me if I had spool chatter and I was not sure what he was referring to. This is my first car of any kind of expensive value. Rest are TT01's, TC5's etc. Decent chassis just nothing like the XRay. My TT01 has a spool in the front and it doesn't do this but it's probably due to all the slop in the front the axles have room to move. That and there is no joint in their axles.
Well, I guess I am stuck with this since the ECS are on back order. That or I replace it with a gear diff which seems to be on back order as well. I guess I could just try and overlook this and drive it.
![Smile :)](./images/smilies/icon_smile.gif)