After trying the vest on, I tried it on and was NOT disappointed. I was a little apprehensive about changing springs for fear of messing things up BUT I realized there are no balls, no glory. Installing Red Springs turned out to be easier than I initially thought. That thing is cool! The kit contained some black plastic parts and I still didn't understand what they were for. Before Vista II, I tested my Redking and found that my wrists were weak. . So I got an arm brace, it helped but I felt a burning sensation in my forearms. Once I got Vista II working, OH MY GOD! What a relief! Much easier to manoeuvre. Now I'm waiting for my Crane 2S so I can turn it into my own DIY ARRI Trinity AKA Minity.