my fish is wet :(

ha ha, yep, I parted with good money on those neat old clamps. Even bought the proper plyers. They went on the shelf in short order. Shame, cause they do look cool. Is their a special installing tool? Might be cause, I`ve seen cars with these clamps with no trace of leaks.
Their is only 2 of these clamps left on my car, ironicly, the 2 heater hose @ the firewall:|