Hi - recently had shower stall redone. Had brand new shower pan put in - custom made tile ready shower pan. It was tiled over and a two piece marble saddle/curb put in. We just started using the shower and noticed on the outside of the shower, underneath the marble saddle there is water leaking. We had the inside touched up with more caulk. It’s still leaking. Any ideas or suggestions what the issue could be? Pictures show shower, outside underneath corner where leaking, and interior shots of corners.