dragartist,
GM also owned the makers of the 'K' engine the Allison T56-15. Hence the nickname 'Detroit Diesel'. Now of course owned by RR.
When loading the heavy drop it was essential to have the CONDEC lined up exactly with the ramp of the a/c. If it was not straight you could easily get it stuck, usually as the platform transited from the ramp to the main floor. On a light training load it was possible with sufficient manpower and judicious use of chains to straighten it. Not so on a max AUW one. You also had to take care that once the platform was moving inside the a/c to prevent a runaway. We did use chocks but they would be no match for the kinetic energy of a max AUW platform gathering speed. The only thing left to absorb this energy would be FS245 ! Not a good solution.
I can well picture your problems with the stuck platform. I still have physical and mental scars from wresting with drop nose pins.