I just installed the aluminum control arms & the ALK this afternoon. Relatively straightforward - no surprises. Just drove it lightly - no additional harshness noted (comfort bushings) - seems more responsive. Will retorque bolts in morning & then beat on it a bit.
I'll check the ALK bolts periodically - never heard of anyone else complaining about the bolts loosening. Really don't see how properly torqued bolts should loosen if everything is together right. I assume these are the two bolts on each side that hold the rear of the control arm (& ALK) to the frame and not any of the 'u' brace bolts - now those I could see some issues with potentially due to the spacer blocks/washers.
-Keith-