Well my experience as follows:
First time I used my x-chocks, I put wheel chocks down, then x-chocks installed between tires, then un-hook from TV. As I hit the auto level start button and the 5er started to level itself, I heard lots of "stress" sounds coming from the wheel/spring/slack adjuster area of my suspension. I halted the auto level feature and noticed that the x-chocks seemed to be under extreme stress. I loosened x-chocks and found the tightening nut on the top of the chocks required much more effort to release compared to the amount of pressure I applied during original installation.
From this point forward I place standard wheel chocks (1 set before and 1 set behind both sets of 5er wheels) and then unhook. After auto leveling is complete I install x-chocks. No more stress issues by following this sequence.
When hooking up, x-chocks come off before any movement is started with the hydraulic landing feet. Wheel chocks come off LAST, just before leaving for the highway.
Lakeside