BB830 breadboards
Interesting. Julian Ilett has a video comparing MB-102s with similar (he calls) "fake" versions.
He compares the clips to show how poorly they open up on the fakes. The fakes are easily distinguished by the uppercase lettering and oddly placed numbering starting from "0."
I have bought a small pile of MB-102s for about US$2 from ali, selecting only those with the lowercase lettering and they all have nicely shaped clips.
So, I'm wondering which kind of MB-102s you have been frustrated with?
Your BB830s have the uppercase lettering but proper numbering so they are something else.