Can someone tell me how to remove the "steering gear control cover", that donut shaped bakelite piece that surrounds the horn button and covers the light and throttle levers on the steering wheel of my '29 coupe. I want to start working on fabricating new levers as my pot-metal ones are broken (as most are I understand). It seems like it should unscrew but I can't budge it and I don't want to break it. I thought someone out there might be able to give me some advice. Thanks. Kim Mc