I'm siding a new garage to match house which has Masonite 12" siding. I can't find outside metal corner pieces and metal overlap strips where boards butt together. While I had no trouble purchasing the siding, and my 30-year-old house siding is in perfect shape, no one can tell me where to find the corner and overlap pieces I need. Everyone tells me to just use 1x3 strips on corners, and caulk the butt joints, but I don't want that. Can anyone tell me where to find the outside corners and overlap strips? Thank you.