Larry,
I know you are going to think this is crude, but in the hayday of those old timer 108s, 114s, and 115s, I replaced leaking hoses with bulk A/C hose and used those water hose looking clamps with the tang that lined up with the end of the hose to be sure you were behind the barb. Hey, you're an old farmer. You can appreciate the American way of getting the job done as simply and cheaply as possible.
Peter