I was born a a farm and been around cattle since. My mother worked at a processor a few years and my brother-in-law was a professional butcher for a number of years at various places. I haven't had a beef processed since they retired. There are countless ways processors cheat clients and every one I've had experience with used one or more. Until dna testing became affordable the favorite was switching carcasses. Now the favorite is weighing their thumb when weighing carcass. Skimming a few packages is 100%. I've hauled a number of steers to processors for people that knew live weight of animal and they were charged hanging weight equal to 65% to 75% live weight. 50% to 60% is what can be obtained. A friend gave me a half a couple years ago and when I went by to give them cutting order, I was appalled at misc add on charges. Animals off pasture should hang 10-14 days before cutting,supermarket wholesalers hand theirs off feed with good fat cover an addition 5-7 days. Processors rarly hang more than 3-5 days.