I have a Street Sport that is a week and a half old. I have a Tekin Rebel ESC and a Speed Gems 2 Garnet 13T in it. It is very fast, but even after getting new tires (Proline strikers on-road), I still have a definite lack of traction. I can handle it being a bit squirrely off the line, but when I'm running at full speed (35-40mph), I can hardly keep it from spinning around. It did this today, hitting a crack in the asphalt while sliding sideways, and barrel-rolled about five or six times. It whirled too fast for me to count. Nothing broken or damaged, but I'm wondering if it would be worthwhile to buy a big wing for the rear of the body for some downforce. Any other tips (shock set-up, etc) that would increase rear traction would be very much appreciated. Thanks.