Same on one of mine. Ran a tap through the manifold & used the two-nut trick to install the new studs.
You lock 2 nuts against each-other to allow you to screw the stud in (just like a bolt). Then undo the 2 nuts from each-other and just leave the stud.what is this two nut magic you speak
Of ?
You lock 2 nuts against each-other to allow you to screw the stud in (just like a bolt). Then undo the 2 nuts from each-other and just leave the stud.