For my offroaders I take the engine out so I can get the bump wheel perfectly centered in the chassis cutout. Then just put the pegs in a postition where they will hold the chassis from going forward/backward, and also keep it from going side to side. Should be about the same for an onroad car I would think..??
Team Associated & CRC, Trackstar motors/esc's, Spektrum radios.
Keeping racing fun and affordable with my 7 year olds :)
The best track I've raced is the one in my backyard!