Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
I understand your caution, Ted. Strangely enough after degreasing and painting the head I bobbed it in the oven at 200 degc for 90mins and the studs wound straight out. I double nutted the studs before baking.
Removing exhaust studs from the cylinder head - that is something I would avoid if the steel studs are okay - call me chicken but it's a recipe for snapped studs IMHO.