Robert explained it correctly. I had the same issue with my roof. I found that when I found the edge of the oil can area, I could use a hammer and donut dolly and shrink that area to stop the oil canning.
A 2 inch pvc straight pipe fitting works also as a dolly.
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Last edited by Wayne67vert; 06/18/2022 11:56 AM.
Wayne
1938 1-Ton Farm Truck
Stovebolt Gallery Forums
1989 Silverado
1996 Mustang GT convertible
When I die, I hope she doesn't sell everything for what I told her I paid for it!