Antonie. When I see it, I'd let it wash. You'll be sure. After your repair when you invest many hours of work and financial investments would be your work in safe.
A sculptor or mason repaired the car in front of you and the results are visible.
In my youth, a bricklayer who wanted to sell a car that had rust and large holes at the bottom. He tossed the trowel from conkrete to the bottom of the car and made the paint and sold the car to the "happy owner" .....
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Jaroslav
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