TPU Stopper for MMU3

I have been looking around the internet for the silicone stopper used in the assembly of the MMU3. I cannot seem to find one anywhere. Because I have some NinjaFlex I had lying around from a few years ago, I thought I would make a model and print one. It mostly worked. Because of the angle on the underside of the MMU3 where you insert the stopper, you may need to trim the tip of it a little. But it fits perfectly and stays in.