Finally I got the perfect guide for the PTFE tubes on my A1 Mini.

It is a fusion of  https://makerworld.com/en/models/415653 and https://www.printables.com/de/model/25400-ptfe-tube-holder-customizable/files

I had to adjust the parameters a few times, so you guys don't have to. The PTFE tubes fit in rather tight. I like it this way. You can snap them need with a generous amount of lovely force, but you can always push them through as well.

My first try was priting with support structures, but then I had a bad time removing it. Without support the surface is clean enough i.m.o. You will need longer screws.

Feel free to adopt for your needs.