i have an 80 malibu and the dash is completely torn out. how do you remove the chrome knobs from the wiper switch and the hvac controls? my gauges are faded and ugly looking so i decided to replace them with gauge overlays from whitefacegauges.net .... awesome products by the way my gauges were getting a little bit of surface rust and were faded. happy someone makes reproduction overlays, will also modernize the look of the gauges. thanks. getting close to getting this thing back together!