I found some generic line from the auto parts store. Slightly smaller. I heated it with the heat gun and pushed it on with pliers.

Probably not recommended, but I tweaked the nipple on the injector out a little bit.

Works good, problem is taking it off.

+1 on carrying some extra.

I've been wondering what that cigar tube return is. I used a normal hose and it's starting to look cigar shaped. Lol.