Anyone familiar with the above grandfather clock movement. Looking for a pendulum. I have almost the same movement made by Hermle but the crutch is different. The Erhard Jauch Uhrenfabrik crutch provides a narrow slot that would hold the typical pendulum at 90 to the direction it should be? Is there a special pendulum leader for this type of clock? I can send a photo, if only I can figure out how?