Stud.io is generally an amazing piece of free software, but some of its features have room for improvement.
The flex feature is ok for some stuff, but when you need your tubes, strings, etc. to bend in a specific way, it can be maddeningly bad!
This is my technique for bending flexible pieces. I prefer to use Mechabricks, which is free, browser-based, and pretty user-friendly once you get used to the slightly different interface.
On this page of the site you can watch the video online Stud.io Flex Tube Tutorial (using Mecabricks) with a duration of hours minute second in good quality, which was uploaded by the user Digibrick Tips 17 June 2021, share the link with friends and acquaintances, this video has already been watched 4,485 times on youtube and it was liked by 88 viewers. Enjoy your viewing!