Anyone happen to have a part number for the pilot side, right handle, yoke mounted, KFC 200 autopilot disconnect / trim interrupt switch - with red button? Mine is round and says CS 8109 C2003R with a 3 below it in center of the switch, but nothing comes up on a search. After nearly 38 years, the plastic around the inside edge holding the red button in finally gave up the ghost and a small piece broke off. Have used electric contact cleaner a couple times through the years with good results. Switch has been a little flaky last several years, sometimes disables electric trim. Have had to wiggle it a little after using it to get electric trim to work again. Autopilot function not affected, only electric trim function. Much appreciated.