Fula-Flex: Resin Edition

Make sure there is plenty of tension on the paper between the build plate and screen when printing. You should be able to barely pull it out. Also ensure that the plate is making even contact throughout the screen. To test this, slip a piece of printer paper under one corner at a time, the tension on the paper should be even. If not, try re-leveling. If re-leveling does not work, you may have a warped build platform.