I did the same thing a couple of years ago. Fun job! The only way I could make it work was heat. Specifically, I soaked the hose ends in boiling water. (For quite a while)
Still a brutal job.
I hope someone comes up with a better answer for you.
1987 CS 36 Merlin "Kyrie"
"They drove a dump truck full of money up to my house. I'm not made of stone!" -Krusty the Clown