The truth about caltracs

My Son Matt loves his Caltracks and don't ask me how but he picked up track tuning super easy and was at Keystone helping two cars headed to Indy last year. They asked him for help and he set up both cars the same night and both made nice improvements on the track. My heads-up car has a set of Caltracks on it so I'm sure I will need his help to. I've done stock springs, super stock springs, ladder bar cars, and 4 links but NEVER touched a Caltrack set-up.