hey up everyone got my magnex fitte today and got a problem..they had to drop the axle to fit it and it does not move and feels very well put together on the car..the only thing when you boot it to high spped there is a rattling on the back ...could it be cathing somewhere? any and all help would be ace...the car looks the finished artical now and sounds beautfiul..plus combines ace with the viper pull like a train now..PLEASE HELP ME ANYONE!!!!