Hi Hoppy I have completed your mod acouple of weeks ago , the clock now runs very reliably , however the extra weight of the magnets have made it very noisy when the arm drops down on the ratchet gear , to the point it where was banned from the living room . My solution was to super glue a very thin piece of felt (a piece of chair foot protector sliced with a sharp knife) ) approx 1/2 mm thick to underneath of the arm . This has taken it back to its original noise level and is accurate to +- 1-2 secs a day ,which I am more than happy with Thank you!