It's difficult to determine what is wrong with the back end of the car. Mine was out alot on the left side. I put a .75mm shim in to fix it. (Yes, it was out that much). I spent an entire day trying to figure whats wrong...and I can't find it
. I don't think it's all in the hubs. I'm starting to think it could be hole position in the chassis. I know X-Ray is working on it.
I'll tell you this. I didn't feel any effect of the extra shim in the back. I was able to better my best time over the 05 with the T2 on it's second run on the track. ( I could 've gone faster but our walls are on the hard side and parts are a issue right now). The car carries corner speed like mad. I really like this car. I find it easier to drive than the 05.
Another little tip. If you can't get the CRC top plate, I cut up an old graphite T-plate from the T-fource and screwed the stock top deck together in the existing holes on the top deck. This made the car much stiffer. Not as stiff as the new plate from CRC, but stiff enough.