As to using the Mikro-Smooth, isn't that kind of like robbing Peter to pay Paul ??? In effect, you are adding yet another chemical agent to the disc and who knows what the result of such a combo might be ? Even if the Mikro-Smooth does remove the Optrix, who is to say that you won't want to remove the Mikro-Smooth at a later date ? I would stick with the highest purity isopropyl alcohol that you can find and then thoroughly rinse the discs after that.
Like the others in this thread, one has to wonder if this is related to a bad batch of chemicals, improper application or simply a side effect of Optrix after a long period of time. Sean
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* We can get 99% isopropyl here but it is much harder to find than the 91%.