Injector by-pass lines, what's the best way to install them?

[lietuviai]

I had a tough time installing my injector by-pass lines when I changed my injectors on my '85 300D. The toughest part was trying to slip them on all the way onto the barbs and get the ends all the way down to the injector body. Anyone have any tips on installing them? I got mine on but most of them are not all the way down to the injector bodies and I'm worried about them blowing off while driving. They seem to be on enough not to leak but I have a feeling I could pull them off without cutting them at this point.