SDK NDK reqs for UE5 compiling to Quest 2

I have been packaging for quest quite well with 4.27, the 5.0.3
but in 5.1 the ndk changes
and I guess maybe the sdk too?
what specifically do I need enabled in android studio?
I have 2 ndk 25 versions
but it doesn’t seem to like them and says they are not installed
but 4.27, and the 5.0.3 still build with the ndk 21 sdk 29
is there a post or page with some specifics?

see here the path
the ndk is there and the android studio shows I have vA and vB of the ndk installed