I've been running into this problem of long (100' +/-) runs of discharge lines migrating in one direction, and the Hydra-Zorb' style clamps and racks shifting, to the point of bending their all-thread hangers. The hangers seem to be doing a ratchet' affect rather than expanding and returning to a neutral position. Neither of the isolator clamp manufactures I spoke to had any help or seem to know of this.
So far our approach has been to brace most of the hangers in the horizontal direction and for the most part the lines have settled in to where they want to land. But now I've found pair of liquid lines doing it and looking for some advise.