My 299,s subfloor is wet and rotted and I,m finding that the wood inside the stringers is black and soft. Can anyone recommend a good repair method. I also see what looks like concrete in the main bulkhead stringer, under the bulkhead itself. Does that sound right? While removing the bathroom cabinets, I also noticed a bundle of wiring running down the shower wall and throught the shower pan. I,m guessing someone did some wall work and forgot to run the wiring between the bathroom wall and the main bulkhead.