i spoke too soon after 6+months my 401 with the same problem trapped someone at 5am. car was in the pit on the limit. i found that the car had DIRF's and LCF's and the car was rolling forward 6"+ in the up direction. looked at the LW% and it was at 0. after i got the guy out i hopped in the car with a couple of engineers and the load cell never went up in %. repair crew will be headed out with a new cell and weights ill let ya know how it goes.