Redrew Garethky's helper and added two holes for JST XH 2.5.
I only tested the middle hole :-)
I'm not sure if this is the solution for everyone.
The JST contacts are very fiddly and once the contact is inserted in the pliers, it works without the helper.
Everyone has to decide for themselves. :D
Printed in PETG
The author remixed this model.
Redrew Garethky's helper and added two holes for JST XH 2.5.