Re: Thoughts on Leaking Shower Drain
You could run some water, wait and see it hitting the ground and mark the area...and raise it and check for a drain connection leak. From what you say, I am inclined to believe that the connection to the tank is loose. From the year, the glue could have easily eroded away. You can get some 2x6 lumber and make drive-ups that allows you under it, while keeping it level. Keep us posted. Safe travels.
Ron J. Moore