my advice is don't touch the system yourself, others dabble here,

one of the reasons my hairdressers system supplier dosent supply to the public is they buy a system wreck it cutting it , and blame the supplier.

don't get me wrong im sure there are some very skilled members here at cutting there systems, id never do it, I leave a skilled hairdresser with 30 years experience to do that.
plenty of posts on how to do it,or videos on u tube,
but knowledge isint allways practical skill