No problem I remember when I first started doing this line of work in 2006 there was literally 2 or 3 videos and they didn't teach anything about the installation.
I use a 4 inch stand that goes around the lip of the rim then turn it over and put it on the one you have then press it off then put it on my short stand to push the new one on?
Great learning video on what not to do, if the lock ring is cut in half. At Callaghan Tire in Florida. we don't touch it if the lock ring is cut in half. that's dangerous, stupid, and will cause injury!
????? Then the forklift manufacturers that send the forklifts with Solid tires straight from the factory with the lockings already cut don't know what you know. You must be smarter than the staff at caterpillar