Thank you all for your responses.
It looks like I need to create some metal strips to establish the desired crown and to see where in fact the metal is either too low or too high.
I'm going to start by plannishing the welded area in hopes that it will raise the adjacent area. Then I'll deal with the crowned area.
What are your opinions as to whether or not welding this roof insert caused the middle area to crown, or do you think the roof insert was over developed before welding?
Looking at this another way, if prior to welding in place, a sheet metal panel is over developed, what would be the process to reduce it's crown?
Does this process change once the panel is welded in place?
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Thanks!
Bruce
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