Question: Driver-assistance camera needs calibration after windshield

I'd keep this practical. Verify the cheap/easy branch on the 1993 Mazda RX-7 before a big repair or a big spend. Then you'll know the next fork. Write the result down so the next test isn't a repeat of the last one. Doing the boring step first on purpose.

Write down what you already tried. A second data point from another 1993 Mazda RX-7 owner helps more than a generic diagnosis. Then you'll know the next fork. That's the whole play. I'd sleep better after that step, even if it finds nothing. If this is nothing, great. I want that in data.