I was reading some older posts and some having problems getting brushless motors to fit and get them geared correctly. Have the cars been updated any from the manufacture or is this still a problem and the racer has to modify the car? I know brushless gearing is pretty wild nowadays in 17.5 and 13.5. These are the two classes I run. I hate to have to grind on new cars to make things work so I figure I should check on things now before I get one.