About urethral tube lenght
[my question is at the end, I wanted to share my story first]
Hello there! Recently I acquired an inverted cage with a tube, but wearing the tube is quite uncomfortable.
I struggled with every movement and couldn't even raise my leg. It felt like the tip was constantly scraping against something. So before I wore it the next time I shortened the tube to about half the size. Now I could move a lot more comfortably, but it still felt like something was scraping. So now it's as long as my thumb, I can move even better, but it's still scraping. Now even more so.
My theory is, that the first time it really was too long and only a bit would have made the scraping stop. I think since the second time, my penis is squashed in an s-shape and it scraped at the end of a corner and the third time it scrapes at the beginning.
Can you help me figure out a solution to my problem? Do you have any idea how I could have found a good measurement?
Thank you for your time!