Well, I hadn't thought about lifting the bed....

They soaked down the retainer nuts on the RH side of the tank and appeared to remove the nuts. But there is no sign at all that the straps were brought down. I would assume they are rustwelded to the plastic tank...maybe they started the job thinking of droping the tank, then thought otherwise.....here is another pic of the "hinge" side of a strap. Note the old crusty zip ties and salt that has not been disturbed.