Strut Update.
The Gabriel struts started geting louder and the handling started getting worse. I verified they were installed correctly by comparing to my parts rig which had never been disassembled. A call to the Gabriel tech line yielded the audible equivalent to a blank stare.
I ordered new Monroe Sensatracs. When I went to install them, just jacking the rig up made a crunching noise. Once removed from the car, the struts moved relatively freely with no noise. One moved more freely than the other indicating valve failure. The new Monroes ride smooth and quiet.
I can only suppose that the side load once install causes the binding and associated noise as both struts had the noise.
If you have a choice, do not install Gabriel struts on an XL7