May not help at all, but one thing I noticed with my prints was that if I removed it before the bed cooled, it would often warp. I’ve since left it until it cools to room temperature and have got much better results.
Does it warp and lift from the base plate during the print, or does it stay stuck down? The former could be because of lack of adhesive and a raft/brim/glue may help, but the latter may just be lifting it off too early.
That’s actually genius, thanks for the tip man