[im3w1l]

I also want to compliment you on the format.

I don't think inflating would work, since it's a tube. Maybe you could achieve the same thing with a sort of skeleton inside the tube that can push it to different widths.

[Someone]

Such a “sort of skeleton” is called aan expandable stent (https://en.wikipedia.org/wiki/Stent).

I wouldn’t know whether that would help, though. I think it’s at least equally likely the problems are caused by having to make fairly tight turns in a tunnel that changes shape all the time.