The clock was running slow. Very slow. A careful review of the escapement revealed that the pallets were not aligned correctly to the escapement wheel. Thankfully the Schatz 49 has an "eccentric" bushing that can be adjusted for just such a situation. The "lock" is when a tooth from a wheel (brass) hits the pallet (steel). As the wheel spins clockwise the tooth should his the left side of the pallet and overlap a mm or 2. when the tooth and the pallet are touching they are engaged. They alternate left and right. The "drop" is the gap between an unengaged tooth and a pallet. The drop and the the lock should be about equal for both left and right pallets. BEFORE adjusting the eccentric bushing/screw counterclockwise - Entrance (left side) lock is very shallow, hitting the impulse face (with recoil), Bad. - Exit (right side) drop large. Too wide a gap between tooth and pallet. - Entrance drop narrow. Almost touches the tooth. Bad. - Ex...