Having a problem with my switches on the eyebrow panel on my dometic fridge. Push the button to adjust the temp (1-4) but seems they are sticky or something. When I push them they don't work or sometimes anymore they will jump up one or two numbers or just won't do anything. Sprayed some silicone in the button but no luck. Right now stuck at 4 so will get cold. Tried to pry off cover with no luck, didn't want to break it. Could it just be old and needs some type of lube, can I take it (cover) off and see switches and clean them up. Any ideas would work. Looked all over web and only get prices for eyebrow, looked for how to remove. Thanks