A little on the cleaning machine. I choose this machine as it allows for ultrasonic to be used if desired along with agitation and is completely programmable for cleaning time, spin off time, drying time, etc. I have an extra set of jars with separate solution for pre-cleaning and final cleaning.
I pre-clean as I check endshakes and all parts for wear/damage under the microscope during disassembly. This also could be down later during movement assembly, but I have had better results doing it this way. Most of my training has been by someone that worked for Rolex and pre-cleaning is what they do. It also is what WOSTEP teaches.
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