Hello, I have been printing now for awhile and I noticed that my PLA prints do great indoors, but when I prime them and get them ready to keep for projects outdoors, they start warping if the walls are not really thick, per attached. Is this something where PLA just naturally does this because it has such a low melt point? Would ABS do any better? Or alternatively, has anyone had any success with putting a 2 part epoxy "shell" on top like XTC-3D or a wood epoxy? Thanks!