Cannot delete/modify/replace System supplied Screen Saver?!?!?

I did this with an older build of Sierra, now under 10.12.5 (and .6?) I am unable to delete/modify/replace, even from root terminal :-(

I would love to do this, as my Arabesque screensaver is borked, and runs at about 1 fps. Anyone have any ideas?

Cheers

submitted by /u/themacmeister
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