Bobs,
One thing you need to add into the equation is packaging and testing (and its capacity), which we hear little about, but it can be a bottleneck the same way wafer processing can be.
I think it is quite possible that AMD has been running full steam for the better part of this year in Dresden, saving K7 wafers, some 130nm K8 wafers as well, and tons of Rev E wafers. Maybe it is the packaging and testing that is operating on the Just-In-Time basis...
Joe