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Pete, the problem with Dilavar is intergranular corrosion, baked in during the manufacturing process.
Ask any of us who were around when the Dilavar studs came out. We'd pull apart engines for various reasons and see broken studs, then go to the parts counter and get a new set. Install them, torque them up, then come back in the morning and see that a few had already broken. Brand new factory studs, torqued to factory specs, by factory trained technicians, and now forced to re-do the job before the engine was even started.
After seeing this first hand a few times, it's no wonder why those of us who have been around awhile are gun shy at using Dilavar studs, much less reusing them. Oh, and the steel studs would sometimes break, too, but at least they'd break after the engine had some miles on it.
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