You could be right about the contractor.
Give him the benefit of the doubt about the non-level eave edge though. When someone looks at the roof plane, the rood shingles would obviously distort the visual perception.
It would be unrealistic to use a transit or string a masonry line at the time of doing a measuring estimate.
An alternative regular seamless gutter system would probably have made more sense and may function better, regarding pitching the trough for drainage, but that barn door has closed down now.
Ed
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