The model by @Eccodyne printed and fit well but would fall off after a short time. I tried the simplest way to fix it by adding a torus to the bottom in the slicer. And it worked! It prints well and is easy to install and stays on. Use my print profile and use the proper plat for TPU so the supports come off easy. remove the supports by grabbing in the bottom middle with needle nose pliers and pull. To install start the cap on one side and twist it while pushing down and it will slide over. You can look at the bottom side to see if it is all the way on. It is easier to remove supports and install fresh off the plate. Enjoy !