Put the little plate on an anvil, the anvil part of a vise, or something hard and flat, with the conical hole up, and strike it with a hammer right on the raised part. May need to do it again, trial and error. -- Bill Parker, South Central Indiana '62 Plymouth Max Wedge; '64 Dart Convertible (Kathi's car); '65 Imperial; '65 Barracuda \6 (Kathi's other car); '68 Hemi Roadrunner; '68 Barracuda Fastback 383-S; '69 Barracuda Fastback now 360 (20 y.o. son's car); '72 Cuda 340