This is somewhat of a tangent but generally it’s advisable to avoid keeping your parts large surfaces parallel to the build plate. Resin issues aside supports and prints are much more likely to fail, in my experience, due to this than any other reason.
Notice on the above example when the printer transitions from “supports” (red) to the first part layer. At that point it goes from a work area of ~Y mm^2 to like ~100 Y mm^2 in one resolution step. This leaves you with two major issues: a dangerously thin layer with very little support, but also a proportionally high removal force to get the layer off the PDMS, compared to an angled sample of the same size:
Angling the part solves both issues: the transition from support structure to part structure is more gradual, both reducing the force needed to pull it off and greatly reduce the amount of unsupported material, as more of the part is able to be built upon itself.
Edit: removed redundant unneeded word