I bought a new antenna for my '04 LT. It is just the antenna rod so I have to disassemble my old antenna base. The base came apart easy enough, there is a small black "gizmo" which surrounds the antenna and holds the antenna and spring together. I tried unsuccessfully trying to get this star style closures apart with every tool I thought would work. Without this part, I can't reassemble the base and mount the new antenna. Suggestions? Thanks.