I need to replace existing gerber toe-push tub popup stopper, because the rubber gasket is worn out. Below are images of the toe-push stopper. 

[![Gerber toe-push tub pop up stopper 1](https://i.stack.imgur.com/FwIG4.jpg)](https://i.stack.imgur.com/8E6SO.jpg)

*Click on image for a larger version of the image.*

[![Gerber toe-push tub pop up stopper 2](https://i.stack.imgur.com/kjcMs.jpg)](https://i.stack.imgur.com/QvZA4.jpg)

*Click on image for a larger version of the image.*

The fitting on the toe-push appears to be either 10-24 or a M5. 

Below is image of of the tub drain shoe

[![Tub Drain Shoe](https://i.stack.imgur.com/penIh.jpg)](https://i.stack.imgur.com/penIh.jpg)

The depth of the fitting in drain shoe is about 1 1/4 inches

I purchased Danco Replacement tub drain stopper. 

[![Danco drain tub toe push stopper](https://i.stack.imgur.com/eaYvy.jpg)](https://i.stack.imgur.com/SW8mf.jpg)

*Click on image for a larger version of the image.*

**Issue:** The fitting the Danco replacement part is 5/16 inches or 3/8 inches. The fitting in the tub drain shoe is less than 5/16 inches. I think the fitting is may be 1/4 inches. 

Anyone run into a similar issue and if so can share how the problem was solved. 

What are possible alternative fittings or any another options? 

**Note:** I also tried the [PF waterworks Fits 3/8 in.and 5/16 in. TubSTRAIN Universal Toe Touch (Tip Toe or Foot Actu.) Hair Catcher Bathtub Drain Stopper in CH](https://www.homedepot.com/p/PF-WaterWorks-Fits-3-8-in-and-5-16-in-TubSTRAIN-Universal-Toe-Touch-Tip-Toe-or-Foot-Actu-Hair-Catcher-Bathtub-Drain-Stopper-in-CH-PF0936-CH/303217336) appear worked but the gasket was too high thus didn't to the job.