I should add that the threaded hose connector on mine was NOT cracked after inspection and in good shape, therefore my feeling was that the 5200 generously applied to the threads would create a good seal. (There is about an inch and a half of thread in the tank so a lot of threaded surface was covered with 5200 -- a very thick tank.)

and yes, I had to use a propane torch to heat the new hose (carefully!) to make it pliable enough to slip on the connector. A couple of hose clamps and that was it.