I actually hate that kind of radiator hose, it will be coming off soon. I had one blow off and spray 190 degree antifreeze all over me a few years ago.

I just can't belive that with good gaskets and grey RTV these things did not seal. I don't even have a clue what to try next. The Moroso gaskets that are rubber with a steel shim would probably work but if they don't it will be a waste of another $40.