Well, not saying you didn't or don't know how, but proper use of that puller is paramount. I've pulled some flanges off that were in a car that had sat since the late 50s. They didn't come right off, but they came off. Tighten the spanner, strike the anvils tight with a hammer, then strike the center screw. Rinse and repeat. I've just never failed with that method, and my puller has minimal wear.