In my Ender 3 Pro I found tightening the screws too much made the bed bow, so I loosened them until they were just firm but not forcing up the corners. I also replaced the default springs with stiffer ones so once set they stayed set. I also built a custom Marlin firmware and I changed the bed mesh algorithm to probe more points and use a more sophisticated algorithm to compensate for levelling. This was with a Bigtree 1.2 board which barely had enough memory for the firmware but I made it work. After that I really didn’t have any issues. Biggest pain was dialing in the Z-offset on the BL touch.