@ekennedy95 A second unit (scs) possibly combined into a "dual" unit. It's to target my lower body also. When I talked to BS about it, they said depending on the person's needs and how they respond during the second trial will factor into what kind of unit they go with. They can either place a whole second unit away from the first one, or replace the first unit with a little bit bigger one that holds enough leads to target upper and lower body both. But I wont know until I do it - I've been delayed because of failing to get off Gaba completely. I could do it anytime, but I'd prefer to test it out starting at ground zero rather than having meds on board, if that makes sense. Sorry if that was a bit confusing.