I have a weird one here. My tub leaks only when my drain is set to draw a bath. It does not leak when taking a shower or even running water without drain set. I have already replaced inside of drain. Does anyone have any suggestions? Thanks in advance

I betcha I know. The putty seal under the lip of the drain has ruptured and allows water to leak past the drain when the tub is full. The solution is to unscrew the drain part way and make a small rope of plumbers putty or silicon jel and push it under the drain lip. Tighten the drain and clean up any excess that's squeezed out. Good luck, Tom