Here are the results after letting them cool for 2 hours -
One is 3/8" fuel line, one is 5/16" fuel line.
I can see no discoloration, cracks, weakness, etc. in either one of the lines.
They are holding the shapes that I wanted so I am very happy with the outcome.
I think the key is not to overheat as to damage the hoses.
As I said, I got them up to about 250F for a little while, gradually working up to that and then let them cool in the shapes that I wanted.
These were both 'straight' hoses before I started.
You do have to have the 'inserts' to keep them from collapsing but they look fine to me.
Now I will install them and we'll see how they hold up in the 'real world'.