I cut mine with tape, pulled the tape carefully and pushed the nut onto the hose. Then I clamped the nut gently in the vise, use some kind of padding, like wood blocks so you don't scratch it all up. Then just grease the fitting a little and stick it in there. I used a little white grease you don't need much. Make sure you hold the hose with one hand while pushing the fitting in with the other or the hose can get pushed out of the nut. Then thread in as far as you can by hand and put a wrench on it. if I ever do it again I'll spring for the aluminum wrenches, regular ones, even real clean and used gingerly will scratch the fittings.