Hi RebeccaRabe1362003
Thanks for the question. You can actually use Advanced Filtering for this, please follow these steps:
from the Custom Kanban Board, select the Show Filters (funnel icon) > use the + Add Filter button, search for and select Type. An empty search box will appear, if you select it you will see the option for User Story and Defect in the drop down menu > select UserStory. This will eliminate the Defects from appearing on the board.
[Side note - this box should not be empty, it should say "Filter by Type" and will shortly]
Let me know if this answers your question or not!
~Leah