Hopefully someone can direct me to fixing a problem with this old Chelsea mantle clock with ship's bell strike serial number 74555 (about 1912). It was in very bad shape when I received it from a client. The case was badly tarnished, the front glass was broken, and, to make matters worse, the movement had been badly treated and was not running. I have repaired many Chelsea clocks over the years, but the previous attempt to repair the clock was obviously done by someone with no experience dealing with Chelsea ship's bell clocks. The movement was previously bushed and many of the bushings were tight and some arbors had no end shake. The pivots needed polishing. The mainsprings were no good, and there were other repairs that needed to be made. Fortunately, the escapement was not damaged. Looking at the rear of the clock, you might notice that the rocker annex spring was soldered to the annex arm. There are now 2 tiny screws on the top edge and the spring has been re-formed to a more appropriate shape. Notice that the snail has the mark at the 5 position (in black), in order to get the rack tail to hit the snail at the appropriate spot. I often refer to the drawing shown for set up, just in case I miss anything. The drawing shows the dots on the snail, minute wheel and the hour pinion to line up. However, if I do that then the clock is not set up properly. It does not seem like the snail has been moved to the wrong place, relative to the dot. After a lot of adjusting on the rocker annex spring, and the rocker itself, I have the tension on it working well. My problem seems to be that when the pins on the lifting wheel come around to lift the hammer, the hammer is not given a chance to fully drop and hit the gong as the next pin is already lifting the hammer again. It's as if the pin on the hammer arbor is too long and the hammer gets lifted too high. When the second lifting pin lifts the hammer, the hammer drops to a low enough position to hit the gong. It does not look like the pin on the hammer arbor has been played with. The movement is set up properly, as I have usually done, with the arm on the hammer arbor (that gets lifted by the lifting pins on the 2nd wheel) is set so the strike train stops with it between the pairs of pins on the 2nd wheel. The pin on the 4th wheel is lined up with the end of the fan blade. If anyone has any suggestions, please let me know.