I was able to use the energy suspension boots as well. just adjust them once you start to tighten down the castle nuts and they'll hold in place. I think I needed to use a flathead screwdriver to make sure the lip of the boot wasn't folded over on itself.
I also had trouble torquing the castle nuts as my wrench/socket wouldn't fit. look into crow foot wrenches that will allow you to get in there, but I'm not sure if it renders your torque wrench inaccurate.