How do I reset default blueprints?

After playing around to create motion controllers in my own level, I must have broke something. Maybe tweaked a default template blueprint by mistake. The Vive controllers no longer show up in any learning demos or the default VR levels. My player is also too high on start. Not sure what I did or how to fix it. I tried clicking update in the Epic launcher and it did something, but it’s still broken. If I click the button below the touchpad, it will take me to the SteamVR menu and the controllers are fine there, so it’s not any other kind of issue. I’ve been enjoying learning, even though the curve has been slightly inclined by my own breaking of things LOL

Thanks for any assistance you can offer,