[Ahdmeyer]

hello i have a 2020 3931 fb with toppers over the slides. i was getting water over the stove by the vent also. my son owns a rv roofing company in Michigan. when i was there last year i had him find the leak. it was not at the vent where i thought it was. on top of the slide on the outside edge there is a "seam" that is covered with a very thin piece of looks like Eterna bond. the screws under this Eterna bond had worked loose and penetrated the Eterna bond and would leak every time it rained. he and i cleaned this seam very good and he used a commercial roofing membrane over this edge, never has leaked again. maybe you have the same problem, worth looking at for sure.