With the bottom filled in like you have it gas can build up and push the agar into the cap.Made my 1st attempt at creating copies of a yeast slant (Timothy Taylor).View attachment 648350
smaller vials and less agar will make it easier to keep the agar inside the vial and also to inoculate and retrieve yeast from the vial.
It is a long read but there is a lot of good information in the slanting sticky in the yeast section.
It is a long read but there is a lot of good information in the slanting sticky in the yeast section.