I’ve exhausted researching a challenge I have on a Hermle 431-020. I’ve gone back through the course and the Hermle training videoand searched the board here but not been able to come of with a answer. After taking this movement apart, cleaning, oiling and following all instructions for timing everything, the movementnt does not chime on the quarter hours. It only chimes on the Hour and Half Hour. Can anyone point me in the right direction of what I should be looking for to correct this?