I also stuck the metal tube back into the HP using JB Weld epoxy, after very carefully cleaning up the faces of LHM. I left it the full 24 hours to dry, and it was in there rock solid.
She no longer have frothy LHM and the brake work as soon as they are needed. The red lights still come on for a split second so i will change the accumulator sphere this weekend.
As you say, if the fixes fail, then i am in trouble!! Hence i shall be checking the res and for fluid leaks every day for a week or so.
Yay