I will post some pics when I get home tonight, so you can see what I am talking about. There is an obvious difference between the right & left side of at least a couple of degrees. It's enough that even my neighbor, who has no experience in RC cars, can see it. But I will also check the RPM's of each wheel to make sure it is not the diff causing it. I need to clean it now since the engine is broke in, so I will check the bearings and such when I take it apart as well. Thanks for the info, it's greatly appreciated.