Have I mortally wounded her

[barney01]

Try tightening the head nuts using the criss cross sequence in your manual to perhaps 18lb/ft to start with then repeat in increments until done. FYI my 550 head studs are 18 to 29 lb/ft so I went to the middle with 23.

[arthur]

I have new gaskets on order will try again later in the week, I will report back
Just found the tightening pattern all systems go