Glad it is working now, but the sandpaper you used certainly removed the plated coating on the pins. They will now corrode much more quickly. Generally a pencil eraser used judiciously is about the most abrasive you can get away with. I'd get a spare OVP and keep it handy.

Steve

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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7