I should have been more persistent before posting. I was able to get the inner and outer tubs removed. There is no sign of a leak at the center post seal, but going to replace anyway. I have attached a few more pictures. one is of the center post, there is a rubber seal there that looks beat. Is that something that can be replaced, and could it be the problem? The other 2 are of something that looks like a nail in a little plastic holder...what the heck is it? Thank you!