Quoted from wolverinetuner:In addition to cleaning up the metal parts, I managed to clean all the switch contacts with alcohol and burnish and reinstall them without breaking off any soldered jumpers between switch stacks. It was great to have that kind of access to all the switches. Here's the before and after comparison (sorry, I did't mean to attach the before photo again, and I can't seem to delete it).
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Nice work. It isn't clear from your after photo but be sure to apply some SuperLube to the cam and post edges of the cam assembly to keep the metal on metal contact from wearing those parts out.