Trying to fix a clock

Harvey's grandfather clock suddenly stops working right one day, so he loads it into his van and takes it to a clock repair shop. In the shop is a little old man who insists he is Swiss, and has a heavy German accent. He asks Harvey, "Vat sims to be ze problem?" Harvey says, "I'm not sure, but it doesn't go 'tick-tocktick -tock' anymore. Now it just goes 'tick...tick...tick.'" The old man says, "Mmm-Hm!" and steps behind the counter, where he rummages around a bit. He emerges with a huge flashlight and walks over the grandfather clock. He turns the flashlight on, and shines it directly into the clocks face. Then he says in a menacing voice, "Ve haf vays of making you tock!"