I appreciate the suggestions bt (I don't think we are talking about the same type coil overs. These are nothing like what you have pictured. Those are entirely different.

My spring is compressed between the lower screw plates and the top plate under the shock eye. This style you slide the spring down over the top of the shock and then place a special upper springs seat that locks under the shock eye around the shaft and sits inside the spring to cenetr it.

this shows the top and bottom platforms it sits on
the red T is the upper that is removeable. I can comporess mine enough to do that