My 2018 miramar Drivers side slide leaked over the dining room window, so it only happened when slide is out, not the window it was or is the roof of the slide, look between the slide top and the awning after a driving rain and you can probably see water puddling on the topper roof, also mine leak at the railing end if the inside seal has the motor cable running through it make sure the seal is down in the pan at the bottom corners of every slide water will run along the cable back into the RV. PS all my slides leak and still leak after 1 1/2 years still working with THOR to stop
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