I have a small shower installed in a bathroom with a one piece surround and a separate base. When I get out of the shower I notice the floor coverings are wet in one corner. The shower rest on a 2 by 4 base and the leak comes out of the wood under the shower base. I've taken the drain cover off and applied caulk around the conection of the drain and shower base. I have also re-caulked all seams that could possibly seep water to the outside. This has not helped. Do I have to take out the entire shower and redo the base? If so how? I'm not sure how it was installed.