[jagrolet]

I think what happaned here is that the car was picked up on the rack on it's frame,the suspension is hanging in "full droop". In the type of rear suspension used on cr's, and 99 percent like it,they do not use check straps as droop limiters(the belief being,the car in most normal driving,would never have the suspension unloaded). On most open wheel cars i have driven,full IRS was the norm,and droop was an important condition as full load,as either one could cause coil bind,on one side,or both.
My geuss,is the spring length is incorrect,or to harsh(that is why it is so low on it's perch,to get a softer ride.) I would definately chech into the lengths and progressions to improve this,and that way,the spring is always loaded on the perch,rarely have i seen a coilover that you had to put at least a small amount of load on the spring,to engage the first threads of the perch.