Good luck with that POS. I used one briefly. Not even the LBS veteran could figure the stupid things out. Near impossible to get the too small tab to stay in the notch.
I then found a nice old Shimano one that came with 15 caged 1/4" balls. I buggered one, so it now has 18 loose balls. I liked it so much I got another NOS on fleabay.
=========
Edit .... Never mind I guess it was my installation error.