I've only ever had that happen with old hoses that i've taken off and reinstalled and with loose hose clamps. I guess you could try a little sealant around the end of the hose but it should seal up good without it, something is wrong. As said above take it apart again clean thoroughly and maybe se some new, high quality hose clamps, I have had problems with the cheap AutoBone ones.
"That's awesome advice. Anytime I have a difficult repair, I fix something else that's much easier to get to. This one time, there was a hole in the oil pan so I replaced the side mirror on the driver's door."
Wanted: Tuffy rear underseat drawer. PM me if you have one.