Ok, I get what you're saying now. The barbs are inside the nut. What works for me when assembling hose ends is make a clean cut, spray as bit of lube into the fitting you push the hose into before you screw it to the fitting, you really have to push and wiggle it to get it to seat all the way. More lube on the threads when you put everything together and screw it together till the nut and fitting are approx 1/16" apart. Flush it out and install.