I am installing a Fabral metal roof on my barn which has a gambrel roof. I have to use 1 x 4's parallel 24 inches on center because I am going over an existing shingled roof. The top roof of the gambrel is a 4/12 pitch. I am trying to figure out how to attach the ridge cap without standing on the metal roof and bending it with my weight being it will be elevated with the 1 x 4's. Any suggestions?