Hello folks, I'm new to this game, and have a couple of seth Thomas movements, one numbered 89c and another numbered 4 1/2. I cleaned and oiled them. I'm noticing that they both run ok using a pendulum weighing 2.8 oz but run for a while and stop on pendulums weighing 4.6 and 5.2 oz. What are your thoughts on the best weight for these movements. Note, one 89c is pictured below. Also, a quick question - do the lantern pinions need to be oiled, or just the bushings on the front / back plates? Thanks folks!