Definitly a very good extension for my P1S. But I had bed adhesion problems with the retainer until I realized, that in your print profile the first layer of the retainer is not printed correctly because of thin walls. So I switched to Arachne wall generator, then it worked. I think it should also work with the classic wall generator if you enable "Detect thin walls"

A little bit to big for a 250ml Red bull can (Red Bull diameter ist 53mm, but the can holder is about 56mm). I changed the scaling from 83% to 79.1% and it fits better now.

Very nice, I just started to collect ;-)