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Has the windshield been replaced? If so, perhaps the new one doesn't have the same markings.The shop manual said something about markings that should show it but I can't find any.
I don't think the precise location of the wipers, when parked, is of great significance, as long as they're in the area, not impinging on your view (don't look awkwardly high), and the overall sweep is good; for example, the driver blade isn't going too high and hitting the edge of the windshield at the left side "A" pillar.
If one or both is too high, you could lower it. Perhaps post a photo showing the blade and the grid, so others with a 2nd Gen car could see if adjustment is suggested.
In my view, the so-called wiper deicer really isn't meant to, and probably wouldn't, deice the wiper blade beyond it's contact point with the glass. Rather, the deicer is intended to soften/melt ice at the bottom of the windshield where the wipers park so that there's less chance the wiper will be stuck to the windshield when the wiper is turned on. In this case, as long as the wiper is in the area being heated, which is indicated by the grid, it should be okay.