Gday "C-D"... :)
Yep, these are great machines indeed and while similar to the Lelit range, they are not identical; some of the componentry has changed over the years...
That being said, if you follow the maintenance regime for the Silvia that will take care of everything except the grinder. This will need occasional cleaning out and is best done with a vacuum cleaner, with the nozzle directed into the top of the grinder with the Hopper removed.
Re: PID Controller mod... More or less identical with the same mod undertaken on a Silvia so all of the same pros and cons apply...
If you do a Google Search on Back-flushing a Silvia, this will turn up heaps of info to get you started... ;)
All the best,