Job handyman in Palatka

I am in need of a knowledgeable, experienced Handyman – for several minor leaks in my work-shop metal building. My building has a1-12 pitch with a 14-foot eave height. The leaks are at the gutter edge/level, an extension ladder is readily available. I’ve tried several times to caulk the first rows of screwheads – to no avail. I must NOT understand how they are leaking?
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