Hi ! Welcome to IRV2! We're sure glad you joined the gang!
If you have a fully enclosed bottom it's gonna be tough to find the problem. Water can run above the bottom to areas totally away from the leak! You probably have access to the shower faucets and the bathroom vanity faucets. Check those first before removing the bottom.
Good luck, happy trails, and God bless!
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Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD