That looks really nice - getting ready to build my viv stack and picking up tips. I see you use those little rubber wedges - they're good, aren't they?
I foresee days of aching muscles and skinned digits, but when I see pics of what the end result should look like, it spurs me on lol!
Very nice. I dont know about yours but when i had my viv stack i needed to have a slight gap between them as i found that they were also getting warmed up by the ones below which affeected the warm end temps.