I also skip the strain soak in lieu of a very slow ramp down. (about 50-60 DPH).
As long as the temp changes are slow enough between annealing and strain point then you won't "un-do" the annealing by setting up new stresses in the glass.
As Lynne, said you can't always trust the pyrometer so nailing the right strain soak temp is harder than proceding through it slowly.
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