I’m working on an 83 DL wagon with front wheel drive. The service manual refers to the missing part as a helper, yet the more common term is bump stop. This car is missing the rubber cone part of the helper on the rear right side. I know there are options for universal part replacement or getting an oem through Subaru, however, I’m lost on the best way to remove the mounting plate that remains. The plate is an octagon, but it’s about an 1/8 inch thick at best. Before I foul it up with what I think would be logical attempts, I think it’s best if I ask how do I get this out from those with more experience! Any guidance would be greatly appreciated!