Well it looks kind of dumb but it works.
I have a 235X235 build sheet (for an Ender) stuck to a 235X235 PEI build plate (also for an Ender)
I stuck a magnet sheet to the 240mm round glass and then stuck the PEI build plate to the glass.
I printed little stoppers to keep the plate from rotating. It looks like a square peg in a round hole lol
I reset my z height and I am off and running. And I can still buy these Ender build sheets so I am set.
anycubic bed.jpg