Have a question for the experts. I am installing a 32 x 48 shower base that will have paneled walls. The base arrived today (Kohler, fiberglass with enamel finish) and upon opening it I could visually see that the back lip is not straight, bowing inward almost 1/2". I know I can shim behind for proper attachment, however I'm concerned about the panels properly fitting over what I see as a manufacturing defect. I assume if I use this one I can shim out the studs to get the back wall level. Due to shipping times I will need to order a new one immediately if needed. I've attached some photos.
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