There's nothing to it.
Drop the platter onto the spindle.
length not really an issue.
although the Platine is simple to set up, i would not advise any new Platine owner with these quotes.
with everything beeing stock and using the thread i would advise to keep the thread length as short as possible.
the ball should just touch the platter without carrying any weight.
to achieve this with the stock Platine is quite a job.
yes by all means go DC. it is easy conversion inside the motorhousing.
i experienced best results with 18Ah total.
other topic goes deeper into the Platine.
keep 'm spinning and congrats with your Platine.