You working exactly as it should. You get stuck on HM2226R which is 13 16“ x 11 16 inch. That is etched with some initials next to the stock number as you can see in the photos. You get stock number HM2024R which is a 5/8 inch by three-quarter inch. That one is also etched as you can see in the photos. Lastly, you get HM1214R which is a 3/8” x 7/16 inch. That is also etched as you can see in the photos. If your initials match up to those your golden. If not, you might have to grind them off. If you really don’t give a damn then you are also golden.