I read where you said, that the original company from China that used to make Mini's and Uni's stopped making them and that you got the original molds, that YOU know make the minis.
.................Welll.................
It's only Natural....
What about making the Uni's too.
Mini' Marker, (about 3/4" - 7/8th's )
Uni's (about 1,1/4" Wide" , and they're flat so they fit into your pocket and hand with a nicer feel.
You should also sell new tips for them also, and maybe new tops/caps, (both the inner metal, and the outter plastic, ones)
along with the proper inks for them, that are opaque, and that flow like it's supposed to Flow.
Thank You again.
That all for how