I like to repair the Moathe Grandfatcher Clock 

The key to adjusting a grandfather clock's pendulum length is the regulating nut that's found on the bottom of the pendulum just below the bob. Turning it clockwise shortens the pendulum, which speeds up the clock. A counterclockwise turn lengthens it, making it run slower

Yes, I have

The key to adjusting a grandfather clock's pendulum length is the regulating nut that's found on the bottom of the pendulum just below the bob. Turning it clockwise shortens the pendulum, which speeds up the clock. A counterclockwise turn lengthens it, making it run slower