thanks for replies peeps, tried all possible shop and mechanic wise options with no joy for a quick fix.
Tried the dreaded stud extractor, but no joy,more chance of snapping that to.
I resorted to a last ditch plan, drill the whole lot out and fit helicoils and replace all tree suds.
Just managed to get a kit of the right size.
By 2.00pm today all three replaced, job sorted and really strong too, and done in situ & working upside down.
Looking good for popham now,
touch wood all else will be fine.
thanks all for info.
Red..