Problem printing Jessica Rabbit (Patreon)

Hello!

I had a patron looking for my assistance with some troubles he's having when printing my Jessica Rabbit model. Since I know very little about resin printing, I wonder if anybody here would be able to help us in this case. 

"[...] i'm having some issues with Jessica Rabbit that have me stumped tbh. The vertical lines near the ass cheeks above thighs on the other piece. I tried everything i had to my knowledge and cant fix it. My theory is that there is some unwanted suction disfiguring the model but that's all i have. Also i did try other models with similar height but the issue is not there, so a machine wobble doesnt seem likely."

Does anybody have any idea of what might be happening in this case?