Welcome back xXbollerXx. Thank you for posting.
The Oculus developer website does have a few tips for you in regards to Oculus touch mapping.
WARNING: This is an external link and as the end user, you are responsible should something happen to your device when you choose to click a link or follow steps that are not endorsed by Epic.
Here is additional documentation from the Unreal docs.
Here is a thread that discusses a few of the controls.
I hope these help.