Thanks for the advice & comiseration, shower is in the back corner of the trailer, so there's no (existing) access panel. I'm thinking about making one though......problem with that is the vanity is tight to the shower pan on the drain side. I'm just hoping that there's not too much damage to the framing/floor.
'11 Four Winds 23'
'97 Ford F-350 CC 7.3 and 10' Alaskan NCO - Unknown vintage.
'05 Komfort 27' Bunkhouse (gone)